22426-90-0

Upstream product

• 622-33-3 N-benzyloxyamine 
• 99-94-5 p-Toluic acid 
• 2687-43-6 O-benzylhydoxylamine hydrochloride 
• 155164-67-3 4,5-Dichloro-2-(4-methyl-benzoyl)-2H-pyridazin-3-one 
• 100-39-0 benzyl bromide 
• 28100-85-8 4-methylbenzhydroxamic acid potassium salt 

Downstream Products

• 5467-99-2 4-methylbenzoic acid benzyl ester 

Relevant academic research and scientific papers

A metal-free iodine-mediated conversion of hydroxamates to esters

A metal-, oxidant-, and additive-free conversion of hydroxamates to esters have been achieved using molecular iodine as the reagent using a novel but not-so-explored heron-type rearrangement. The reaction proceeds with almost equal facility with substrates having either electron-donating or electron-withdrawing substituent. Similarly, α,?-unsaturated, and sterically hindered ortho-substituted hydroxamates also undergo the desired transformation smoothly.

Palladium-Nanoparticles-Catalyzed Oxidative Annulation of Benzamides with Alkynes for the Synthesis of Isoquinolones

A novel method to synthesize isoquinolones via oxidative annulation of N-alkoxy benzamides and alkynes using binaphthyl-stabilized palladium nanoparticles (Pd-BNP) as catalyst has been developed. This methodology affords various isoquinolone derivatives in good to excellent yields with high regioselectivities in the presence of air as oxidant. N-Methoxybenzothioamide was also found to undergo oxidative annulation with alkyne successfully and provided a sulfur analogue of isoquinolones in moderate yields. The Pd-BNP catalyst was easily recovered and reused up to four times without any apparent agglomeration. (Figure presented.).

Transition-Metal-Free Synthesis of N-Aryl Hydroxamic Acids via Insertion of Arynes

An efficient and transition-metal-free N-arylation of amides via the insertion of arynes into the N-H bonds in the N-alkoxy amides is described. A variety of the reactive functional groups including the reactive aldehyde carbonyl group, furan ring, carbon-carbon double bonds, and free N-H bond of indole are found to be compatible with this process. In particular, the protocol is applicable in the synthesis of structurally diverse N-aryl hydroxamates and hydroxamic acids derived from N-protecting amino acids and peptides. In the presence of multiple amide N-H bonds, the N-arylation reaction can proceed selectively in the N-H bonds of terminal N-OBn amides giving rise to the desired N-aryl hydroxamates.

N-[(diphenoxyphosphoryl)oxy]-2-phenyl-1H-benzimidazole as a versatile reagent for synthesis O-alkylhydroxamic acids

(Chemical Equation Presented) Highly efficient reagent, N-[(diphenoxyphosphoryl)oxy]-2-phenyl-1H-benzimidazole was synthesized and its applicability was demonstrated for the synthesis of O-alkyl hydroxamic acids. The efficiency of the reagent was evaluate

Design, synthesis and utilization of a novel coupling reagent for the preparation of O-alkyl hydroxamic acids

An efficient novel reagent, phosphoric acid diethyl ester 2-phenyl-benzimidazol-1-yl ester, was designed, and synthesized and its applicability was demonstrated for the preparation of O-alkyl hydroxamic acids. The O-alkyl hydroxamic acids of N-protected a

Convenient preparation of O-alkylhydroxamic acids using 2-acylpyridazin-3(2H)-ones

Treatment of O-alkylhydroxylamine hydrochlorides with 2-acyl-4,5- dichloropyridazin-3(2H)-ones in the presence of triethylamine or Amberlite IRA-67 in acetonitrile gave corresponding O-alkylhydroxamic acid derivatives in excellent yields. This is an effic