615-08-7Relevant academic research and scientific papers
TBHP/ n -Bu 4 PBr-Promoted Oxidative Cross-Dehydrogenative Coupling of Aryl Methanols: A Facile Synthesis of Symmetrical Carboxylic Anhydride Derivatives
Adib, Mehdi,Pashazadeh, Rahim
supporting information, p. 136 - 140 (2017/12/27)
A transition-metal-free oxidative cross-dehydrogenative coupling reaction has been developed for the preparation of symmetrical carboxylic anhydrides through self-coupling dual C-O bond formations of aryl methanols. In the presence of a catalytic amount of tetrabutylphosphonium bromide (TBPB) as transfer agent and aqueous tert -butyl hydroperoxide (TBHP) as oxidant and reactant, methylene groups of aryl methanols were efficiently oxidized to C=O and coupled with the peroxide oxygen from TBHP to form a diverse array of symmetrical carboxylic anhydride derivatives.
ZnCl2-mediated synthesis of carboxylic anhydrides using 2-acyl-4,5-dichloropyridazin-3(2H)-ones
Park, Yong-Dae,Kim, Jeum-Jong,Kim, Ho-Kyun,Cho, Su-Dong,Kang, Young-Jin,Park, Ki Hun,Lee, Sang-Gyeong,Yoon, Yong-Jin
, p. 371 - 378 (2007/10/03)
ZnCl2 is an efficient catalyst for synthesis of carboxylic acid anhydride from 2-acyl-4,5-dichloropyridazin-3(2H)-ones. Treatment of 2-acyl-4,5-dichloropyridazin-3(2H)-ones with ZnCl2 (0.5 equivalents) and air in refluxing dry THF or
