Tag: M.W=150-200

McLaughlin, Calum published the artcileCatalytic enantioselective synthesis of 1,4-dihydropyridines via the addition of C(1)-ammonium enolates to pyridinium salts, Name: 4-Methoxyphenylacetic acid, the main research area is aromatic ester pyridinium salt isothiourea catalyst dearomatization; dihydropyridine enantioselective regioselective preparation.

The regio- and stereoselective addition of C(1)-ammonium enolates – generated in situ from aryl esters and the isothiourea catalyst (R)-BTM – to pyridinium salts bearing an electron withdrawing substituent in the 3-position allowed the synthesis of a range of enantioenriched 1,4-dihydropyridines. This represented the first organocatalytic approach to pyridine dearomatization using pronucleophiles at the carboxylic acid oxidation level. Optimization studies revealed a significant solvent dependency upon product enantioselectivity, with only toluene providing significant asym. induction. Using DABCO as a base also proved beneficial for product enantioselectivity, while investigations into the nature of the counterion showed that co-ordinating bromide or chloride substrates led to higher product er than the corresponding tetrafluoroborate or hexafluorophosphate. The scope and limitations of this process were developed, with enantioselective addition to 3-cyano- or 3-sulfonylpyridinium salts giving the corresponding 1,4-dihydropyridines (15 examples, up to 95 : 5 dr and 98 : 2 er).

Chemical Science published new progress about Addition reaction catalysts, stereoselective (regioselective). 104-01-8 belongs to class isoquinoline, name is 4-Methoxyphenylacetic acid, and the molecular formula is C9H10O3, Name: 4-Methoxyphenylacetic acid.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Zhu, Qilei published the artcilePhotocatalytic Hydromethylation and Hydroalkylation of Olefins Enabled by Titanium Dioxide Mediated Decarboxylation, Quality Control of 104-01-8, the main research area is carboxylic acid alkene titanium dioxide light photocatalytic hydroalkylation decarboxylation; alkane preparation.

A versatile method for the hydromethylation and hydroalkylation of alkenes at room temperature is achieved by using the photooxidative redox capacity of the valence band of anatase titanium dioxide (TiO2). Mechanistic studies support a radical-based mechanism involving the photoexcitation of TiO2 with 390 nm light in the presence of acetic acid and other carboxylic acids to generate Me and alkyl radicals, resp., without the need for stoichiometric base. This protocol is accepting of a broad scope of alkene and carboxylic acids, including challenging ones that produce highly reactive primary alkyl radicals and those containing functional groups that are susceptible to nucleophilic substitution such as alkyl halides. This methodol. highlights the utility of using heterogeneous semiconductor photocatalysts such as TiO2 for promoting challenging organic syntheses that rely on highly reactive intermediates.

Journal of the American Chemical Society published new progress about Alkanes Role: SPN (Synthetic Preparation), PREP (Preparation). 104-01-8 belongs to class isoquinoline, name is 4-Methoxyphenylacetic acid, and the molecular formula is C9H10O3, Quality Control of 104-01-8.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Yang, Tao published the artcileChemoselective Union of Olefins, Organohalides, and Redox-Active Esters Enables Regioselective Alkene Dialkylation, HPLC of Formula: 104-01-8, the main research area is alkenyl amide ester haloalkane nickel chemoselective regioselective dialkylation; amide dialkyl preparation.

Multicomponent catalytic processes that can generate multiple C(sp3)-C(sp3) bonds in a single step under mild conditions, particularly those that employ inexpensive catalysts and substrates, are highly sought-after in chem. research for complex mol. synthesis. Here, we disclose an efficient Ni-catalyzed reductive protocol that chemoselectively merges alkenyl amides with two different aliphatic electrophiles. Starting materials are readily accessible from stable and abundant feedstock, and products are furnished in up to >98:2 regioisomeric ratios. The present strategy eliminates the use of sensitive organometallic reagents, tolerates a wide array of complex functionalities, and enables regiodivergent addition of two primary alkyl groups bearing similar electronic and steric attributes across aliphatic C=C bonds with exquisite control of site selectivity. Utility is underscored by the concise synthesis of bioactive compounds and postreaction functionalizations leading to structurally diverse scaffolds. DFT studies revealed that the regiochem. outcome originates from the orthogonal reactivity and chemoselectivity profiles of in situ generated organonickel species.

Journal of the American Chemical Society published new progress about Alkanes Role: SPN (Synthetic Preparation), PREP (Preparation). 104-01-8 belongs to class isoquinoline, name is 4-Methoxyphenylacetic acid, and the molecular formula is C9H10O3, HPLC of Formula: 104-01-8.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Vaganov, Vladimir Yu. published the artcileOptimization of Catalyst Structure for Asymmetric Propargylation of Aldehydes with Allenyltrichlorosilane, Product Details of C9H10O3, the main research area is atropisomeric bipyridine dioxide preparation; aryl aldehyde allenyltrichlorosilane bipyridine dioxide catalyst enantioselective propargylation; arylpropargylic alc preparation.

In this work a set of atropisomeric bipyridine N,N’-dioxides was tested as Lewis base catalysts for the asym. propargylation of aldehydes with trichloroallenylsilane. The catalysts were easily prepared in four simple steps starting from readily available Me ketones. Aryl-substituted derivatives proved to be highly active and showed a high level of enantiocontrol even at 1 mol% loading. The reaction scope includes a wide range of aromatic, heteroaromatic, and unsaturated aldehydes. New computations confirm that the key stereodetermining transition state structures for the synthesized catalysts are similar to those previously reported for the model structure.

Advanced Synthesis & Catalysis published new progress about Alkynes Role: SPN (Synthetic Preparation), PREP (Preparation). 86-51-1 belongs to class isoquinoline, name is 2,3-Dimethoxybenzaldehyde, and the molecular formula is C9H10O3, Product Details of C9H10O3.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Mouries, Virginie published the artcileRadical β-elimination of a sulfinyl group to afford allenes, Safety of 2-Methyl-3-(3,4-methylenedioxyphenyl)propionaldehyde, the main research area is allene preparation; sulfoxide vinyl radical beta elimination.

An unprecedented radical β-elimination of vinyl sulfoxides, e.g. I (R = PhSO), obtained in two steps from the corresponding aldehydes or ketones and Ph vinyl sulfoxide, opened a new route to functionalized allenes, e.g. II. The radical translocation stratagem could also be used to trigger the β-elimination of the sulfinyl radical. Studies on the effect of the nature of the sulfur group on a common precursor showed that vinyl sulfimide I (R = PhSNTs) reacts similarly to vinyl sulfoxide I (R = PhSO), whereas vinyl sulfide I (R = PhS), vinyl sulfone I (R = PhSO2), and vinylsulfinyl imine I (R = PhSONTs) gave no allene II.

European Journal of Organic Chemistry published new progress about Allenes Role: SPN (Synthetic Preparation), PREP (Preparation). 1205-17-0 belongs to class isoquinoline, name is 2-Methyl-3-(3,4-methylenedioxyphenyl)propionaldehyde, and the molecular formula is C11H12O3, Safety of 2-Methyl-3-(3,4-methylenedioxyphenyl)propionaldehyde.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Liu, Feipeng published the artcilePalladium/Norbornene-Catalyzed Indenone Synthesis from Simple Aryl Iodides: Concise Syntheses of Pauciflorol F and Acredinone A, Recommanded Product: 4-Methoxyphenylacetic acid, the main research area is acredinone A synthesis; pauciflorol F formal synthesis; indenone preparation annulation; acredinone A; indenone; norbornene; palladium; pauciflorol F.

To show the synthetic utility of palladium/norbornene (Pd/NBE) cooperative catalysis, here we report concise syntheses of indenone-based natural products, pauciflorol F and acredinone A, which are enabled by direct annulation between aryl iodides and unsaturated carboxylic acid anhydrides. Compared to the previous indenone preparation approaches, this method allows simple aryl iodides to be used as substrates with complete control of the regioselectivity. The total synthesis of acredinone A features two different Pd/NBE-catalyzed ortho acylation reactions for constructing penta-substituted arene cores, including the development of a new ortho acylation/ipso borylation.

Angewandte Chemie, International Edition published new progress about Aryl iodides Role: RCT (Reactant), RACT (Reactant or Reagent). 104-01-8 belongs to class isoquinoline, name is 4-Methoxyphenylacetic acid, and the molecular formula is C9H10O3, Recommanded Product: 4-Methoxyphenylacetic acid.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Bhat, Mashooq A. published the artcileBiginelli synthesis of novel dihydropyrimidinone derivatives containing phthalimide moiety, Application In Synthesis of 86-51-1, the main research area is isoindolylphenylcarbonyl dihydropyrimididnone preparation; dimethylaminopropenoylphenyl isoindole urea benzaldehyde Beginelli reaction.

Novel Biginelli compounds, 5-benzoyl-substituted phenyl-3,4-dihydropyrimidin-2(1H)-one-1H-isoindole-1,3(2H)- dione were synthesized from enaminone, 2-{4-[(2E)-3-(dimethylamino)prop-2-enoyl]phenyl}-1H-isoindole-1,3(2H)- dione, which was synthesized by refluxing 2-(4-acetylphenyl)-1H-isoindole-1,3(2H)-dione, with dimethylformamidedimethylacetal (DMF-DMA) without solvent for 12 h. The compound 2-(4-acetylphenyl)-1H-isoindole-1,3(2H)-dione was obtained by reacting phthalic anhydride with para-aminoacetophenone in glacial acetic acid for 2 h. This method was employed to synthesize the dihydropyrimidinone derivatives containing phthalimide moiety. Structures of all the synthesized compounds were characterized by spectroscopic methods.

Journal of Chemistry published new progress about Aryl ketones Role: RCT (Reactant), RACT (Reactant or Reagent). 86-51-1 belongs to class isoquinoline, name is 2,3-Dimethoxybenzaldehyde, and the molecular formula is C9H10O3, Application In Synthesis of 86-51-1.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Liu, Yafei published the artcileA copper-catalyzed approach for the synthesis of asymmetrical disubstituted 1,2,4-thiadiazoles via elemental sulfur-mediated decarboxylative redox cyclization, SDS of cas: 104-01-8, the main research area is thiadiazole preparation; arylacetic acid amidine decarboxylative redox cyclization copper catalyst.

The various asym. disubstituted 1,2,4-thiadiazoles I (R = Ph, 2,5-dimethylphenyl, naphthalen-2-yl, thiophen-2-yl, etc.; R1 = H, Me, CF3, Ph) are smoothly prepared by copper-catalyzed approach, which employed arylacetic acids RCH2C(O)OH and amidines 4-R1C6H4C(=NH.HCl)NH2 as substrates, and elemental sulfur to mediate decarboxylative redox cyclization. The advantages of this method are simple, efficient, and ligand-free. In addition, this method can provide products I in moderate to good yields.

Tetrahedron Letters published new progress about Benzamidines Role: RCT (Reactant), RACT (Reactant or Reagent). 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

Chen, Yu published the artcileTotal Synthesis of Denigrin E and Its Oxidative Conversion into Co-occurring Metabolite Denigrin D, COA of Formula: C9H10O3, the main research area is denigrin E total synthesis oxidative rearrangement denigrin D.

An unambiguous, six-step total synthesis of denigrin E (5) from anisaldehyde 22 has been achieved, confirming the structure of this marine natural product. On treatment with t-BuOOH/Mo(CO)6, compound 5 undergoes a unique and possibly biogenetically relevant oxidative rearrangement to generate the co-occurring metabolite denigrin D (4), which is obtained in 61% yield.

Organic Letters published new progress about Molecular structure, natural product (structure confirmation). 104-01-8 belongs to class isoquinoline, name is 4-Methoxyphenylacetic acid, and the molecular formula is C9H10O3, COA of Formula: C9H10O3.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Ishida, Naoki published the artcileCarboxylation of Benzylic and Aliphatic C-H Bonds with CO2 Induced by Light/Ketone/Nickel, Related Products of isoquinoline, the main research area is ketone nickel carboxylation benzylic aliphatic carbon dioxide.

A photoinduced carboxylation reaction of benzylic and aliphatic C-H bonds with CO2 is developed. Toluene derivatives capture gaseous CO2 at the benzylic position to produce phenylacetic acid derivatives when irradiated with UV light in the presence of an aromatic ketone, a nickel complex, and potassium tert-butoxide. Cyclohexane reacts with CO2 to furnish cyclohexanecarboxylic acid under analogous reaction conditions. The present photoinduced carboxylation reaction provides a direct access from readily available hydrocarbons to the corresponding carboxylic acids with one carbon extension.

Journal of the American Chemical Society published new progress about Alkylarenes Role: RCT (Reactant), RACT (Reactant or Reagent). 104-01-8 belongs to class isoquinoline, name is 4-Methoxyphenylacetic acid, and the molecular formula is C9H10O3, Related Products of isoquinoline.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem