Category: isoquinoline

Yoshii, Tomomi published the artcileN-Hydroxybenzimidazole as a structurally modifiable platform for N-oxyl radicals for direct C-H functionalization reactions, Recommanded Product: 1,3-Dimethoxybenzene, the main research area is hydroxy benzimidazole preparation DFT; benzyl amide preparation; aldehyde benzyl amine tandem functionalization hydroxy benzimidazole tetrafluoroborate catalyst; carbonyl compound preparation; phenyl propanal nucleophile functionalization hydroxy benzimidazole tetrafluoroborate catalyst.

Synthesis of N-oxyl radicals based on N-hydroxybenzimidazole were prepared and used as catalysts for direct C-H functionalization reaction of aldehydes with benzyl amine to afford N-benzyl-amides RC(O)NHBn [R = n-pentyl, Ph, (CH2)2Ph, etc.] in one-pot manner. Also, a series of carbonyl compounds R1C(O)R2 [R1 = (CH2)2Ph; R2 = OEt, OBn, pyrrolidin-1-yl etc.] was prepared via 1-hydroxy-3-methyl-2-phenyl-1H-benzo[d]imidazol-3-ium tetrafluoroborate catalyzed C-H functionalization reaction of 3-phenylpropanal with various nucleophiles. A class of unsym. ketones R3C(O)R4 [R3 = (CH2)2Ph; R4 = Ph, CH2CO2Me, 1,3-(OMe)2C6H3, etc.] was synthesized via reaction of phenylpropanoyl fluoride with various carbon nucleophiles. Moreover, with 1-hydroxy-3-methyl-2-phenyl-1H-benzo[d]imidazol-3-ium tetrafluoroborate as catalyst, a metal-free approach for the synthesis of acyl fluorides R5C(O)F [R5 = (CH2)2Ph, 4-MeC6H4, 4-MeOC6H4] via direct C-H fluorination of aldehydes using selectfluor as reagent under mild conditions was reported. N-hydroxybenzimidazole catalysts were carried out for d. functional theory calculations in order to estimate the bond dissociation energy values of the O-H bonds within the moiety.

Chemical Science published new progress about Aldehydes Role: RCT (Reactant), RACT (Reactant or Reagent). 151-10-0 belongs to class isoquinoline, name is 1,3-Dimethoxybenzene, and the molecular formula is C8H10O2, Recommanded Product: 1,3-Dimethoxybenzene.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Shabalala, Nhlanhla Gracious published the artcileCatalyst-free synthesis of novel isopropyl 2-amino-7,7-dimethyl-4-(aryl)-5-oxo-5,6,7,8-tetrahydro-4H-chromene-3-carboxylate derivatives in aqueous ethanol under ultrasound irradiation, Safety of 2,3-Dimethoxybenzaldehyde, the main research area is isopropyl amino dimethyl aryl oxo tetrahydrochromene carboxylate green preparation; aldehyde isopropyl cyanoacetate dimedone three component ultrasound.

A series of 2-amino-7,7-dimethyl-4-(aryl)-5-oxo-5,6,7,8-tetrahydro-4H-chromene-3-carboxylate derivatives I [R = n-Bu, 2-ClC6H4, 4-FC6H4, etc.] was reported via a simple, efficient and environmentally friendly protocol. This was achieved through a three-component reaction of chosen aliphatic and aromatic aldehydes with iso-Pr cyanoacetate and 5,5-dimethyl-1,3-cyclohexanedione in aqueous ethanol under ultrasound irradn with excellent yields (95-99%) for rapid reaction times (5-15 min) at room temperature This method avoided the use of a catalyst, volatile organic solvents and column chromatog. The present method gave a 95% atom economy and 100% of carbon efficiency.

Chemical Data Collections published new progress about Aldehydes 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, Safety of 2,3-Dimethoxybenzaldehyde.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Prasad, Sure Siva published the artcileOne-Pot, Three-Component Approach to Diarylmethylphosphonates: A Direct Entry to Polycyclic Aromatic Systems, COA of Formula: C8H10O2, the main research area is aldehyde three component reaction electron rich heteroarene alkyl phosphite; polycyclic arylmethyl phosphonate preparation cyclization formylphenylboronate; phenanthrene preparation.

A new type of three-component reaction was developed consisting of aldehydes, electron-rich (hetero)arenes, and trialkyl phosphite, which provided facile access to a wide range of diarylmethylphosphonates under mild reaction conditions. Simple 1- or two-step synthetic manipulation of the resulting compounds enabled the authors to reach several polycyclic (hetero)aromatic systems efficiently.

Journal of Organic Chemistry published new progress about Aldehydes Role: RCT (Reactant), RACT (Reactant or Reagent). 151-10-0 belongs to class isoquinoline, name is 1,3-Dimethoxybenzene, and the molecular formula is C8H10O2, COA of Formula: C8H10O2.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Srimannarayana, Malempati published the artcileDeracemization and Transacetalization of Aldehydes with Enantiomers of Betti’s Base Derivatives, Safety of 2-Methyl-3-(3,4-methylenedioxyphenyl)propionaldehyde, the main research area is deracemization transacetalization aldehyde enantiomer Betti base naphthoxazine; resolution aromatic aldehyde.

Improved procedure for the deracemization (resolution) of α-Me dihydrocinnamic aldehydes (2-methyl-3-phenylpropanals) of formula RCHMeCHO [R = Ph, 4-methoxyphenyl, 4-isopropylphenyl, 4-tert-butylphenyl, benzo[d][1,3]dioxol-5-yl] with L-(+)-tartaric acid salt of (S)-enantiomer of Betti’s base (I) to obtain naphthoxazines (II) and optically active dihydrocinnamic aldehydes (III) is presented. The method enabled the transacetalization of N,O-ketal (R)-enantiomer of Betti’s base (IV) with various aldehydes of formula R1-CHO [R1 = Ph, iso-Bu, 1-(4-isopropylphenyl)propan-2-yl, 2-(4-methoxyphenyl)ethyl, benzyl, 4-nitrophenyl, 1-[(benzo[d][1,3]dioxol-5-yl)methyl]propan-2-yl, 1-(4-tert-butylphenyl)propan-2-yl] to give N,O-ketals (V) and (VI) (R1 = same as above).

Synthetic Communications published new progress about Aldehydes Role: RCT (Reactant), RACT (Reactant or Reagent). 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

Vandavasi, Jaya Kishore published the artcileA Nickel-Catalyzed Carbonyl-Heck Reaction, COA of Formula: C11H12O3, the main research area is Heck organotriflate aldehyde nickel catalyst triphos ligand amine base; Heck reactions; acylation; cross-coupling; ketones; nickel.

The use of transition-metal catalysis to enable the coupling of readily available organic mols. has greatly enhanced the ability of chemists to access complex chem. structures. In this work, an intermol. coupling reaction that unites organotriflates and aldehydes is presented. A unique catalyst system is identified to enable this reaction, featuring a Ni0 precatalyst, a tridentate Triphos ligand, and a bulky amine base. This transformation provides access to a variety of ketone-containing products without the selectivity- and reactivity-related challenges associated with more traditional Friedel-Crafts reactions. A Heck-type mechanism is postulated, wherein the π bond of the aldehyde takes the role of the olefin in the insertion/elimination steps.

Angewandte Chemie, International Edition published new progress about Aldehydes Role: RCT (Reactant), RACT (Reactant or Reagent). 1205-17-0 belongs to class isoquinoline, name is 2-Methyl-3-(3,4-methylenedioxyphenyl)propionaldehyde, and the molecular formula is C11H12O3, COA of Formula: C11H12O3.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Liang, Shengzong published the artcileSynthesis of Alkyl Halides from Aldehydes via Deformylative Halogenation, COA of Formula: C11H12O3, the main research area is alkyl halide synthesis aldehyde deformylative halogenation.

An unprecedented deformylative halogenation of aldehydes to alkyl halides is presented. Under oxidative conditions, 1,4-dihydropyridine (DHP), derived from an aldehyde, generated a C(sp3) radical that coupled with a halogen radical that was generated from inexpensive and atom-economical halogen sources (NaBr, NaI, or HCl), to yield an alkyl halide. Because of the mild conditions, a wide range of functional groups were tolerated, and excellent site selectivity was achieved.

Organic Letters published new progress about Aldehydes Role: RCT (Reactant), RACT (Reactant or Reagent). 1205-17-0 belongs to class isoquinoline, name is 2-Methyl-3-(3,4-methylenedioxyphenyl)propionaldehyde, and the molecular formula is C11H12O3, COA of Formula: C11H12O3.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Shi, Hongwei published the artcileCatalyst- and additive-free sunlight-induced autoxidation of aldehydes to carboxylic acids, Name: 5-Methyl-2-phenylhex-2-enal, the main research area is carboxylic acid preparation green chem; aldehyde autoxidation sunlight.

A catalyst- and additive-free sunlight-induced strategy for autoxidation of a wide range of aldehydes RCHO (R = Bu, cyclohexyl, Ph, pyridin-3-yl, etc.) to carboxylic acids RC(O)OH is described for the first time. In this oxidation system, air serves as the source of oxygen and sunlight as the light source, and the system includes the advantages of green, highly atom-efficient, and low-cost synthesis. This method was easily applied even at gram scale. The reaction proceeds smoothly even at lower temperature and in natural light.

Green Chemistry published new progress about Aldehydes Role: RCT (Reactant), RACT (Reactant or Reagent). 21834-92-4 belongs to class isoquinoline, name is 5-Methyl-2-phenylhex-2-enal, and the molecular formula is C13H16O, Name: 5-Methyl-2-phenylhex-2-enal.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Ban, Yong-Liang published the artcileThiocyanate radical mediated dehydration of aldoximes with visible light and air, Recommanded Product: 2,3-Dimethoxybenzaldehyde, the main research area is nitrile preparation; aldoxime thiocyanate radical dehydration visible light air aizenuranine catalyst.

Herein, a new means of activating aldoximes by an in situ generated thiocyanate radical from ammonium thiocyanate and mol. oxygen at room temp has been discussed. With a catalytic amount of organic dye aizenuranine as the photocatalyst, the dehydration of aldoximes proceeds smoothly under visible light irradiation, providing a simple to handle, excellent functional group tolerance, and metal-free protocol for a wide range of nitriles.

Chemical Communications (Cambridge, United Kingdom) published new progress about Aldehydes 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, Recommanded Product: 2,3-Dimethoxybenzaldehyde.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Pan, Gao-Fei published the artcileSynthesis of Enones and Enals via Dehydrogenation of Saturated Ketones and Aldehydes, Product Details of C11H12O3, the main research area is enone enal preparation; ketone aldehyde dehydrogenation palladium catalyst.

A general, efficient and economic palladium-catalyzed dehydrogenation to form enones or enals has been developed. The approach possesses extremely broad substrate scope including various linear or cyclic saturated ketones and aldehydes. The protocol is ligand-free, and mol. oxygen is used as the sole clean oxidant in the reaction. Due to mild reaction conditions, good functional group compatibility, and versatile utilities of enones and enals, the method can be applied in the late-stage synthesis of natural products, pharmaceuticals and fine chems.

Advanced Synthesis & Catalysis published new progress about Aldehydes Role: RCT (Reactant), RACT (Reactant or Reagent). 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

Korvinson, Kirill A. published the artcileCatalytic Reductions Without External Hydrogen Gas: Broad Scope Hydrogenations with Tetrahydroxydiboron and a Tertiary Amine, Synthetic Route of 151-10-0, the main research area is arene arylamine benzylic alc chemoselective preparation; palladium catalyst reduction haloarene aryl triflate without hydrogen; hydroxydiboron methylmorpholine chemoselective reductant; chemoselective deuteration haloarene palladium catalyst deuterated hydroxyboron DMAP; deuteriation; diboron; hydrogenation; reduction; tetrahydroxydiboron.

Aryl bromides, iodides, chlorides, and triflates, benzylic halides and ethers, benzyl carbamates, alkenes, alkynes, azides, and aldehydes underwent reductive cleavage, hydrogenation, and reduction reactions using B2(OH)4 as reductant in the presence of Pd/C and 4-methylmorpholine. Aryl dihalides containing two different halogen atoms underwent selective reduction, with reduction of I favored over reduction of Br and Cl, and Br reduction favored over the reduction of Cl. Cyano groups were unaffected, but nitro group and ketones underwent reduction to a low extent. B2(OD)4 and N,N-bis(methyl-d3)pyridin-4-amine (DMAP-d6) were used as reagents for the reductive deuteration of aryl halides. Hydrogen gas has been observed to form with this reagent combination.

Advanced Synthesis & Catalysis published new progress about Aldehydes Role: RCT (Reactant), RACT (Reactant or Reagent). 151-10-0 belongs to class isoquinoline, name is 1,3-Dimethoxybenzene, and the molecular formula is C8H10O2, Synthetic Route of 151-10-0.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem