作者:Pavel A. Gunchenko、Jing Li、Bifu Liu、Hongyan Chen、Alexander E. Pashenko、Vladyslav V. Bakhonsky、Tatyana S. Zhuk、Andrey A. Fokin
DOI:10.1016/j.mcat.2017.12.017
日期:2018.3
highly polar trifluoroacetic acid as a media for the metal-free aerobic oxidations propagated by phthalimide N-oxyl- (PINO) radical was demonstrated experimentally utilizing N-hydroxyphthalimide (NHPI) as a catalyst and HNO3 or NaNO2 as promoters. The oxidations of toluene, cyclohexane, adamantane, diamantane, and 3-oxadiamantane gave, respectively, benzaldehyde, adipic acid, 1-hydroxyadamantane, 1-hydroxydiamantane
利用N-羟基邻苯二甲酰亚胺(NHPI)作为催化剂和HNO 3或NaNO 2,通过实验证明了高极性三氟乙酸作为邻苯二甲酰亚胺N-氧基-(PINO)自由基传播的无氧好氧氧化反应的介质的潜力。作为发起人。甲苯,环己烷,金刚烷,金刚烷和3-恶二金刚烷的氧化在高转化率下可分别产生高达90%的选择性的苯甲醛,己二酸,1-羟基金刚烷,1-羟基二金刚烷和9-羟基-3-恶二金刚烷。起始材料。根据M06-2X和B3LYP-D3层的密度泛函理论计算,甲苯和苯甲醇与高度亲电的PINO自由基提取氢的极化过渡结构(TS)通过非共价相互作用(π–π)得以稳定。堆叠)。对于从苯甲醛中脱除H的化合物,TS中不存在这种额外的稳定作用,因此可阻止其过氧化为苯甲酸。