Tag: M.W=150-200

Li, Jingyi published the artcileA broadly tuned mouse odorant receptor that detects nitrotoluenes, COA of Formula: C13H16O, the main research area is odorant receptor MOR25617 broad specificity nitrotoluene explosive biosensor.

Mammals employ large numbers of odorant receptors to sample and identify volatile chems. in the environment. These receptors are thought to vary not only in specificity for particular odorants, but also in breadth of tuning. That is, some odorant receptors are narrowly focused on a few closely related structures, while other odorant receptors may be “”broadly tuned””, responding to a wide variety of odorant structures. In this study, we have performed a detailed examination the mouse odorant receptor MOR256-17, demonstrating that this receptor is broadly tuned. This receptor responds to odorant structures that span a significant portion of a multi-dimensional odor space. However, we found that broad tuning was not a defining characteristic of other members the MOR256 subfamily. Two addnl. members of this odorant receptor subfamily (MOR256-8 and MOR256-22) were more narrowly focused on small sets of odorant structures. Interestingly, the receptive range of MOR256-17 encompassed a variety of nitrotoluenes, including various trinitrotoluene synthesis intermediates, degradation products and trinitrotoluene itself, suggesting the potential utility of odorant receptors in the development of sensing technologies for the detection of explosives and other forms of contraband.

Journal of Neurochemistry published new progress about Biosensors (for detection of explosives, potential use of odorant receptors in). 21834-92-4 belongs to class isoquinoline, name is 5-Methyl-2-phenylhex-2-enal, and the molecular formula is C13H16O, COA of Formula: C13H16O.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Wei, Duo published the artcileRhenium-Catalyzed Reduction of Carboxylic Acids with Hydrosilanes, Computed Properties of 104-01-8, the main research area is rhenium catalyzed photochem reduction carboxylic acid hydrosilane; disilylacetal preparation; aldehyde preparation.

Re2(CO)10 efficiently catalyzes the direct reduction of various carboxylic acids under mild conditions (rt, irradiation 350 or 395 nm). While aliphatic carboxylic acids were readily converted to the corresponding disilylacetals with low catalyst loading (0.5 mol %) in the presence of Et3SiH (2.2 equiv), aromatic analogs required more drastic conditions (Re2(CO)10 5 mol %, Ph2MeSiH 4.0 equiv) to afford the corresponding aldehydes after acid treatment.

Organic Letters published new progress about Acetals Role: SPN (Synthetic Preparation), PREP (Preparation) (disilylacetals). 104-01-8 belongs to class isoquinoline, name is 4-Methoxyphenylacetic acid, and the molecular formula is C9H10O3, Computed Properties of 104-01-8.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Ishihara, Kazuaki published the artcileEnantio- and Site-Selective α-Fluorination of N-Acyl 3,5-Dimethylpyrazoles Catalyzed by Chiral π-CuII Complexes, Safety of 4-Methoxyphenylacetic acid, the main research area is enantioselective regioselective fluorination acyldimethylpyrazole chiral pi copper complex; asymmetric catalysis; copper; fluorination; pyrazoles; π-cation interactions.

Catalytic enantioselective α-fluorination reactions of carbonyl compounds are among the most powerful and efficient synthetic methods for constructing optically active α-fluorinated carbonyl compounds Nevertheless, α-fluorination of α-nonbranched carboxylic acid derivatives is still a big challenge because of relatively high pKa values of their α-hydrogen atoms and difficulty of subsequent synthetic transformation without epimerization. Herein we show that chiral copper(II) complexes of 3-(2-naphthyl)-L-alanine-derived amides are highly effective catalysts for the enantio- and site-selective α-fluorination of N-(α-arylacetyl) and N-(α-alkylacetyl) 3,5-dimethylpyrazoles [e.g., I → II (99%, 91% ee)]. The substrate scope of the transformation is very broad (25 examples including a quaternary α-fluorinated α-amino acid derivative). α. α-Fluorinated products were converted into the corresponding esters, secondary amides, tertiary amides, ketones, and alcs. with almost no epimerization in high yield.

Angewandte Chemie, International Edition published new progress about Acidity (LFER for acidity of N-acylpyrazoles vs. mol. electrostatic potential). 104-01-8 belongs to class isoquinoline, name is 4-Methoxyphenylacetic acid, and the molecular formula is C9H10O3, Safety of 4-Methoxyphenylacetic acid.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Lee, Sang Eon published the artcileEffects of enzymatic modification of wheat protein on the formation of pyrazines and other volatile components in the Maillard reaction, Synthetic Route of 21834-92-4, the main research area is wheat gluten hydrolyzate pyrazine volatile Maillard reaction.

Enzymically hydrolyzed wheat gluten hydrolyzate (WGH) was deamidated using glutaminase to produce deamidated wheat gluten hydrolyzate (DWGH). Volatile components were analyzed in WGH and DWGH thermally reacted with glucose or fructose. In the reaction system containing glucose, 19 pyrazines, 2 furans, and 5 sulfur-containing components were detected in WGH, while 34 pyrazines, 4 furans, and 7 sulfur-containing components were found in DWGH. In the system containing fructose, 24 pyrazines, 3 furans, and 6 sulfur-containing components were identified in the thermal reaction of WGH, whereas 36 pyrazines, 4 furans, and 8 sulfur-containing components were found in DWGH. The volatile components increased in DWGH, both qual. and quant., mainly due to free ammonia released by deamidation. More volatiles were also developed in WGH and DWGH with fructose than with glucose. It was found that ammonia released from wheat protein via deamidation participated in the generation of diverse volatile components including pyrazines in the Maillard reaction.

Food Chemistry published new progress about Alcohols Role: FMU (Formation, Unclassified), FORM (Formation, Nonpreparative). 21834-92-4 belongs to class isoquinoline, name is 5-Methyl-2-phenylhex-2-enal, and the molecular formula is C13H16O, Synthetic Route of 21834-92-4.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Maeda, Bumpei published the artcilePhotoredox-Catalyzed Benzylic Esterification via Radical-Polar Crossover, Computed Properties of 104-01-8, the main research area is benzylic ester preparation; arylacetic acid diacetoxyiodobenzene photoredox decarboxylative esterification catalyst.

Photoredox-catalyzed C-O bond formation reactions are reported. The decarboxylative esterification reaction allows the conversion of a variety of arylacetic acids into the corresponding benzyl carboxylates. Furthermore, the use of (diacetoxyiodo)benzene allows the conversion of the benzylic C-H bond through hydrogen atom transfer. The reactions were applied to the divergent transformation of pharmaceuticals via decarboxylative or C-H esterification reactions.

Organic Letters published new progress about Carboxylic acids Role: RCT (Reactant), RACT (Reactant or Reagent) (arylacetic). 104-01-8 belongs to class isoquinoline, name is 4-Methoxyphenylacetic acid, and the molecular formula is C9H10O3, Computed Properties of 104-01-8.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Thurow, Samuel published the artcilePreparation of Organic Nitrates from Aryldiazoacetates and Fe(NO3)3·9H2O, Category: isoquinoline, the main research area is organic nitrate preparation aryldiazoacetate iron.

A thermal protocol is reported for the formal insertion of nitric acid into aryldiazoacetates using Fe(NO3)3·9H2O. This strategy is mild and high yielding and gave a large variety of members of an unprecedented family of organic nitrates. The nitrate group can be also readily transformed into other functional groups and heterocyclic moieties and can possibly allow new biol. explorations of untapped potential associated with their NO-releasing ability.

Organic Letters published new progress about Acetates Role: RCT (Reactant), RACT (Reactant or Reagent) (aryldiazoacetates). 104-01-8 belongs to class isoquinoline, name is 4-Methoxyphenylacetic acid, and the molecular formula is C9H10O3, Category: isoquinoline.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Yang, Qian published the artcileRemarkable Activity of Potassium-Modified Carbon Nitride for Heterogeneous Photocatalytic Decarboxylative Alkyl/Acyl Radical Addition and Reductive Dimerization of para-Quinone Methides, SDS of cas: 104-01-8, the main research area is potassium intercalated carbon nitride heterogeneous photocatalyst; decarboxylative radical addition reductive dimerization quinone methide.

Heterogeneous photocatalysis has emerged as a green and sustainable technique in organic synthesis. Developing highly effective heterogeneous photocatalysts that outperformed classical ruthenium-/iridium-based homogeneous ones for the visible-light mediated organic transformations is actively pursued by chemists but remains challenging. Herein, a modified carbon nitride-based heterogeneous photocatalytic system for both decarboxylative addition and reductive dimerization of para-quinone methides has been developed. The potassium-intercalated carbon nitride (CN-K) facile prepared by the direct KCl-induced structure remodeling of bulk g-C3N4 exhibited remarkable catalytic activity. The catalyst loading can be decreased to 0.025-0.25 mg/mL, which is significantly lower than that in homogeneous photocatalysis. Studies on the structure characterizations and photoelec. properties of CN-K and g-C3N4 imply that the enhanced activity of CN-K was attributed to its K-intercalated poly(heptazine)-based structure and existed as small lamellar nanocrystallites, thus leading to enhanced optical absorption, improved electron-hole separation, and easy dispersion in polar solvents. The heterogeneous nature and mild reaction conditions of this protocol allow for good catalyst recyclability, broad substrate scope, scale-up in a continuous flow, and applications to the valued target synthesis.

ACS Sustainable Chemistry & Engineering published new progress about Agglomerates (clustered mass) (agglomerates of g-C3N4 vs. nanosheets of CN-K). 104-01-8 belongs to class isoquinoline, name is 4-Methoxyphenylacetic acid, and the molecular formula is C9H10O3, SDS of cas: 104-01-8.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Hou, Lixia published the artcileCharacterization of the volatile compounds and taste attributes of sesame pastes processed at different temperatures, Product Details of C13H16O, the main research area is Sesamum taste pyrrole thiophene aldehyde ketone temperature; processing; sesame pastes; taste attributes; the volatile compounds.

Sesame paste is used as a condiment in many parts of the world because of its unique flavor. In the study, the volatile compounds and flavor characteristics of sesame pastes processed at different temperatures (140°C – 190°C) were analyzed by application of solid phase microextraction – gas chromatog./mass spectrometry anal., odor activity value evaluation and sensory evaluation. For all the sesame pastes processed at the different temperatures, the pyrazine group had the highest content. The amount of the volatiles increased by 4.15-fold when the roasting temperature increased from 140°C to 180°C, which was mainly attributed to the increase of pyrazines, alkenes, ketones, thiazoles and pentylfuran. And accordingly, sesame paste prepared at 180°C had the highest Odor Activity Value (OAV). Samples differed significantly in terms of aroma and total acceptability (p < 0.05). The sesame paste processed at 180°C had a moderate roasted and sweet aroma, and the highest acceptability, followed by that processed at 170°C. These results can be valuable for manufacturers to adjust the roasting process according to market demand for a particular flavor profile. Journal of Oleo Science published new progress about Aldehydes Role: BSU (Biological Study, Unclassified), BIOL (Biological Study). 21834-92-4 belongs to class isoquinoline, name is 5-Methyl-2-phenylhex-2-enal, and the molecular formula is C13H16O, Product Details of C13H16O.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Xue, Junxiu published the artcileThe aroma analysis of asparagus tea processed from different parts of green asparagus (Asparagus officinalis L.), Related Products of isoquinoline, the main research area is Asparagus officinalis perennial herb nutrient aroma component tea production.

Asparagus is a perennial herb rich in multiple nutrients; however, the utilization of asparagus is lower on account of one-third part of the asparagus often be discarded as a byproduct at harvest in order to standardize the length for market. In this study, asparagus spears were divided into tip (top of the spear, 5 cm), mid (intermediate of the spear, 5 cm), and base (rest of the spear, 5 cm) parts, and the mid part and base part were cut into as 2-3 cm length. As following, the three parts of asparagus spears were processed into tea with green tea processing craft, resp. Electronic nose and GC-MS analyses were used to investigate the aroma components of three asparagus teas. A total of 59 components were detected, among which there were 37, 43, and 50 components in the tip, mid, and base asparagus tea, resp. According to the electronic nose anal. and GC-MS anal., we speculate aldehydes, alkanes, and ketone were the main aroma components of asparagus tea. And the different aroma components among the three asparagus teas might be caused by the different spear parts of asparagus. The sensory evaluation score of the mid asparagus tea was 88.54 ± 0.33, which was highest among the three teas. The results indicated that mid asparagus tea might be more popular with consumers. Asparagus (Asparagus officinalis L.) were divided into tip, mid, and base parts, and every part was processed into tea resp. The process optimization and aroma anal. could improve the utilization rate of asparagus and also provides a basis for clarifying the specific volatile of asparagus tea.

Journal of Food Processing and Preservation published new progress about Aldehydes Role: BSU (Biological Study, Unclassified), BIOL (Biological Study). 21834-92-4 belongs to class isoquinoline, name is 5-Methyl-2-phenylhex-2-enal, and the molecular formula is C13H16O, Related Products of isoquinoline.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Crafack, Michael published the artcileImpact of starter cultures and fermentation techniques on the volatile aroma and sensory profile of chocolate, Recommanded Product: 5-Methyl-2-phenylhex-2-enal, the main research area is Pichia fermentation volatile aroma compound chocolate.

The sensory quality of chocolate is widely determined by the qual. and quant. composition of volatile compounds resulting from microbial metabolism during fermentation, and Maillard reactions taking place during drying, roasting and conching. The influence of applying mixed starter cultures on the formation of flavor precursors, composition of volatile aroma compounds and sensory profile was investigated in cocoa inoculated with cultures encompassing a highly aromatic strain of Pichia kluyveri or a pectinolytic strain of Kluyveromyces marxianus, and compared to com. fermented heap and tray cocoa. Although only minor differences in the concentration of free amino acids and reducing sugars was measured, identification and quantification by dynamic headspace gas chromatog.-mass spectrometry (HS/GC-MS) revealed pronounced differences in the composition of volatiles in roasted cocoa liquors and finished chocolates. 19 of the 56 volatile compounds identified in the chocolates were found in significantly higher amounts in the tray fermented sample, while significantly higher amounts of 2-methoxyphenol was measured in the two inoculated chocolates. The P. kluyveri inoculated chocolate was characterized by a significantly higher concentration of phenylacetaldehyde and the K. marxianus inoculated chocolate by significantly higher amounts of benzyl alc., phenethyl alc., benzyl acetate and phenethyl acetate compared to a spontaneously fermented control. Sensory profiling described the heap and tray fermented chocolates as sweet with cocoa and caramel flavours, while the inoculated chocolates were characterized as fruity, acid and bitter with berry, yoghurt and balsamic flavours. The choice of fermentation technique had the greatest overall impact on the volatile aroma and sensory profile, but while the application of starter cultures did affect the volatile aroma profile, differences were too small to significantly change consumer perception of the chocolates as compared to a spontaneously fermented control.

Food Research International published new progress about Aldehydes Role: BSU (Biological Study, Unclassified), BIOL (Biological Study). 21834-92-4 belongs to class isoquinoline, name is 5-Methyl-2-phenylhex-2-enal, and the molecular formula is C13H16O, Recommanded Product: 5-Methyl-2-phenylhex-2-enal.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem