Month: November 2022

Shishlikova, Maria A. published the artcileDirected Synthesis of Regioisomeric Monoaryl-Substituted Pyridines Containing a Tricyanobutadiene Fragment and Study on Their Optical Properties, Category: isoquinoline, the main research area is tricyanobutadieyl pyridine preparation regioselective optical study; chlorocinnamaldehyde malononitrile dimer heterocyclization; arylmalondialdehyde malononitrile dimer heterocyclization; enaminoketone malononitrile dimer heterocyclization.

A series of regioisomeric monoaryl-substituted pyridines I (Ar = H, Ph, 4-methoxyphenyl, 3,4-dimethoxyphenyl; Ar1 = H, Ph, 4-methoxyphenyl, 3,4-dimethoxyphenyl; Ar2 = H, Ph, 4-methoxyphenyl, 3,4-dimethoxyphenyl) containing a tricyanobutadiene fragment was prepared using modified known and novel developed synthetic approaches. Advantages and limitations of the used methods were discussed. Dependence of the optical absorption and emission characteristics on the position of aromatic substituent was studied. An unusual intramol. charge transfer from malononitrile fragment to the pyridine ring was found, which was consistent with observed exptl. and theor. data.

ChemistrySelect published new progress about Alkyl aryl ketones 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, Category: isoquinoline.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Abrams, Dylan J. published the artcileToward a mild dehydroformylation using base-metal catalysis, Product Details of C11H12O3, the main research area is aldehyde tungsten cobalt catalyst dehydroformylation; alkene preparation regioselective.

A base-metal catalyzed, mild dehydroformylation method that incorporated benefits from earlier methods while avoiding several of their resp. disadvantages was designed. Importantly, the cooperative base metal catalysis presented a powerful, mechanistically unique approach to reactions which were difficult to achieve using conventional catalyst design was showed.

Chemical Science published new progress about Alkenes 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, Product Details of C11H12O3.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Lang, Simon B. published the artcileActivation of Alcohols with Carbon Dioxide: Intermolecular Allylation of Weakly Acidic Pronucleophiles, SDS of cas: 1205-17-0, the main research area is nitroalkane allyl alc carbon dioxide palladium allylation catalyst; nitrile allyl alc carbon dioxide palladium allylation catalyst; aldehyde allyl alc carbon dioxide palladium allylation catalyst; allylated product preparation.

The direct coupling of allyl alcs. with nitroalkanes, nitriles, and aldehydes using catalytic Pd(PPh3)4 has been accomplished via activation of C-OH bonds with CO2. The in situ formation of carbonates from alcs. and CO2 facilitates oxidative addition to Pd to form reactive π-allylpalladium intermediates. In addition, the formation of a strong base activates nucleophiles toward the reaction with the π-allylpalladium electrophile. Overall, this atom economical reaction provides a new C-C bond without the use of an external base and generates water as the only byproduct.

Organic Letters published new progress about Alkanes, nitro Role: RCT (Reactant), SPN (Synthetic Preparation), RACT (Reactant or Reagent), PREP (Preparation). 1205-17-0 belongs to class isoquinoline, name is 2-Methyl-3-(3,4-methylenedioxyphenyl)propionaldehyde, and the molecular formula is C11H12O3, SDS of cas: 1205-17-0.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Zhang, Qi published the artcileCatalytic Asymmetric Disulfuration by a Chiral Bulky Three-Component Lewis Acid-Base, Application In Synthesis of 1205-17-0, the main research area is dicarbonyl disulfide methoxy Lewis acid base asym disulfuration; disulfide keto stereoselective preparation; chiral primary amines; disulfuration; enamines; frustrated Lewis pairs; organocatalysis.

A three-component Lewis acid-base (Lewis trio) involving a bulky chiral primary amine, B(C6F5)3 and a bulky tertiary amine has been developed as an effective enamine catalyst for enantioselective disulfuration reactions. The bulky tertiary amine was found to activate a bulky primary-tertiary diamine-borane Lewis pair for enamine catalysis via frustrated interaction. The resulted chiral bulky Lewis trio (BLT) allows for the construction of chiral disulfides via direct disulfuration with β-ketocarbonyls or α-branched aldehydes in a practical and highly stereocontrolled manner.

Angewandte Chemie, International Edition published new progress about Enamines Role: CAT (Catalyst Use), SPN (Synthetic Preparation), USES (Uses), PREP (Preparation). 1205-17-0 belongs to class isoquinoline, name is 2-Methyl-3-(3,4-methylenedioxyphenyl)propionaldehyde, and the molecular formula is C11H12O3, Application In Synthesis of 1205-17-0.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Stivanin, Mateus L. published the artcileBlue Light-Promoted N-H Insertion of Carbazoles, Pyrazoles and 1,2,3-Triazoles into Aryldiazoacetates, Application of 4-Methoxyphenylacetic acid, the main research area is carbazole diazophenylacetate photochem insertion reaction; carbazolyl phenylacetate preparation; pyrazole diazophenylacetate photochem regioselective insertion reaction; pyrazolyl phenylacetate preparation; triazole diazophenylacetate photochem regioselective insertion reaction; triazolyl phenylacetate preparation.

Blue light irradiation of aryldiazoacetates led to the formation of free carbenes, which reacted with carbazoles, pyrazoles and 1,2,3-triazoles to afford the corresponding N-H inserted products. These reactions were performed under air and at room temperature, allowing the mild preparation of a variety of motifs found in biol. relevant targets.

Advanced Synthesis & Catalysis published new progress about Carboxylic acids, alkyl esters Role: RCT (Reactant), SPN (Synthetic Preparation), RACT (Reactant or Reagent), PREP (Preparation). 104-01-8 belongs to class isoquinoline, name is 4-Methoxyphenylacetic acid, and the molecular formula is C9H10O3, Application of 4-Methoxyphenylacetic acid.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Scattolin, Thomas published the artcileA Nucleophilic Deprotection of Carbamate Mediated by 2-Mercaptoethanol, Application of 4-Methoxy-N-methylaniline, the main research area is carbamate mercaptoethanol nucleophilic deprotection; secondary amine preparation.

Carbamates, typically used for the protection of amines, including Cbz, Alloc, and Me carbamate, was readily deprotected by treatment with 2-mercaptoethanol in the presence of potassium phosphate tribasic in N,N-dimethylacetamide at 75°C. This nucleophilic deprotection protocol was superior to the standard hydrogenolysis or Lewis acid-mediated deprotection conditions for substrates bearing a functionality sensitive to these more traditional methods.

Organic Letters published new progress about Free energy. 5961-59-1 belongs to class isoquinoline, name is 4-Methoxy-N-methylaniline, and the molecular formula is C8H11NO, Application of 4-Methoxy-N-methylaniline.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Abrams, Roman published the artcileTriarylmethanes and their Medium-Ring Analogues by Unactivated Truce-Smiles Rearrangement of Benzanilides, HPLC of Formula: 5961-59-1, the main research area is preparation triarylmethane medium ring analog; unactivated Truce Smiles rearrangement benzanilide intramol nucleophilic aromatic substitution; Hammett plot; SNAr; Truce-Smiles rearrangement; medium ring; triarylmethane.

Intramol. nucleophilic aromatic substitution (Truce-Smiles rearrangement) of the anions of 2-benzyl benzanilides leads to triarylmethanes in an operationally simple manner. The reaction succeeds even without electronic activation of the ring that plays the role of electrophile in the SNAr reaction, being accelerated instead by the preferred conformation imposed by the tertiary amide tether. The amide substituent of the product may be removed or transformed into alternative functional groups. A ring-expanding variant (n to n+4) of the reaction provided a route to doubly benzo-fused medium ring lactams of 10 or 11 members. Hammett anal. returned a ρ value consistent with the operation of a partially concerted reaction mechanism.

Angewandte Chemie, International Edition published new progress about Reaction mechanism. 5961-59-1 belongs to class isoquinoline, name is 4-Methoxy-N-methylaniline, and the molecular formula is C8H11NO, HPLC of Formula: 5961-59-1.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Felicetti, Tommaso published the artcileSustainable, three-component, one-pot procedure to obtain active anti-flavivirus agents, Product Details of C9H10O3, the main research area is pyridobenzothiazolone preparation antiflaviviral NS5 polymerase inhibition Dengue Zika antitumor; Antiviral agents; Dengue inhibitors; NS5 polymerase; One-pot procedure; Three-component reaction (3CR); Zika inhibitors.

The development of a new and sustainable three-component reaction (3CR) that can be combined with a basic hydrolysis in a one-pot procedure has been reported to obtain the pyridobenzothiazole (PBTZ) scaffold, thus reducing the number of synthetic steps, improving yields and saving time. 3CR was significantly explored in order to demonstrate its wide scope by using different starting materials. Taking advantage of these procedures, a new set of PBTZ analogs was synthesized and tested as anti-DENV-2 and anti-ZIKV agents. Compound I inhibited DENV-2 NS5 polymerase with an IC50 of 10.4μM and represented the best anti-flavivirus compound of the new series by inhibiting DENV-2- and ZIKV-infected cells with EC50 values of 1.2 and 5.0μM, resp., that translates into attractive selectivity indexes (SI – 83 and 20, resp.). These results strongly reaffirm PBTZ derivatives as promising anti-flavivirus agents that now can be synthesized through a convenient and sustainable 3CR in order to obtain more potent compounds for further pre-clin. development studies.

European Journal of Medicinal Chemistry published new progress about Antitumor agents. 104-01-8 belongs to class isoquinoline, name is 4-Methoxyphenylacetic acid, and the molecular formula is C9H10O3, Product Details of C9H10O3.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Lenko, Illia published the artcileMedia-Driven Pd-Catalyzed Reaction Cascades with 1,3-Diynamides Leading Selectively to Either Indoles or Quinolines, Application In Synthesis of 5961-59-1, the main research area is diynamide amine palladium catalyst cascade heteroannulation rection; amino alkynyl indole preparation; aminoalkenyl quinoline preparation; cumulenes; homogeneous catalysis; indoles; quinolines; ynamides.

Divergent Pd-catalyzed reaction cascades with various 1,3-diynamides yielding either 2-amino-3-alkynylindoles or 2-amino-4-alkenylquinolines were established. Omitting or adding TBAF (tetrabutylammonium fluoride) to the reaction of N,N-(2-iodophenyl)(4-toluenesulfonyl)-1,3-diynamides with secondary or primary amines in the presence of KOH in THF and catalytic amounts of Pd(PPh3)4 completely changed the outcome of the reaction. In the absence of TBAF, 2-amino-3-alkynylindoles were the sole products, while the presence of TBAF switched the product formation to 2-amino-4-alkenylquinolines. Deuterium labeling proceeded selectively at the C3 and C11 positions of the 2-amino-4-alkenylquinoline products and this suggests the unprecedented formation of [4]cumulenimines from 1,3-diynamides as reactive key intermediates.

Angewandte Chemie, International Edition published new progress about Alkynes, bromo Role: RCT (Reactant), RACT (Reactant or Reagent). 5961-59-1 belongs to class isoquinoline, name is 4-Methoxy-N-methylaniline, and the molecular formula is C8H11NO, Application In Synthesis of 5961-59-1.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Yu, Rongrong published the artcileRegio-, Chemo-, and Enantioselective Ni-Catalyzed Hydrocyanation of 1,3-Dienes, Formula: C11H12O3, the main research area is nitrile preparation regioselective chemoselective enantioselective; diene hydrocyanation nickel catalyst.

A regio-, chemo-, and enantioselective nickel-catalyzed hydrocyanation of 1,3-dienes e.g., 1-[(1E)-buta-1,3-dien-1-yl]-4-fluorobenzene is reported. The key to the success of this asym. transformation is the use of a specific multichiral diphosphite ligand. In addition to aryl-substituted 1,3-dienes, highly challenging aliphatic 1,3-diene substrates can also be preferentially converted to the corresponding 1,2-adducts e.g., (2R,3E)-4-(4-fluorophenyl)-2-methylbut-3-enenitrile in decent yields with the highest enantioselectivities to date.

Organic Letters published new progress about Chemoselectivity. 1205-17-0 belongs to class isoquinoline, name is 2-Methyl-3-(3,4-methylenedioxyphenyl)propionaldehyde, and the molecular formula is C11H12O3, Formula: C11H12O3.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem