An efficient in situ prepared superacid BF3–H2O promoted benzylation of arenes using benzyl alcohols and acetates achieves various diarylalkanes.
一种高效的原位制备的超强酸BF3-H2O促进的芳烃苄基化反应,使用苄醇和醋酸酯制备各种二芳基烷烃。
Reusable ionic liquid-catalyzed oxidative esterification of carboxylic acids with benzylic hydrocarbons via benzylic Csp<sup>3</sup>–H bond activation under metal-free conditions
作者:Fen Mou、Yadong Sun、Weiwei Jin、Yonghong Zhang、Bin Wang、Zhiqing Liu、Lei Guo、Jianbin Huang、Chenjiang Liu
DOI:10.1039/c7ra02788e
日期:——
A metal-free protocol for the direct oxidativeesterification of the Csp3–H bond in benzylic hydrocarbons with carboxylic acids using heterocyclic ionic liquid as catalyst has been reported. The catalyst 1-butylpyridinium iodide could be easily recycled and reused for at least four cycles without obvious loss of catalytic activity.
Bu4NI-Catalyzed C–C Bond Cleavage and Oxidative Esterification of Allyl Alcohols with Toluene Derivatives
作者:Yaoyao Chen、Chengliang Li、Yongmei Cui、Mingming Sun、Xueshun Jia、Jian Li
DOI:10.1055/s-0039-1690105
日期:2019.10
groups for further functionalization and enriches the reactivity profile of allyl alcohol and toluene derivatives. In addition, this protocol represents a new transformation of allyl alcohol involving C–C bond cleavage and C–O bond forming. A novel oxidative esterification of 1-arylprop-2-en-1-ols with toluene derivatives catalyzed by tetrabutylammonium iodide (TBAI) is reported. The optimization of
Preparation of Esters and Amides from Carboxylic Acids by Activation with Dialkyl Phosphite-Carbon Tetrachloride Mixture
作者:Zsuzsa M. Jászay、Imre Petneházy、László Tőoke
DOI:10.1080/00397919808004849
日期:1998.8
Abstract A simple one pot phase transfer catalytic method is described for the synthesis of carboxylic amides and esters from carboxylicacids and amines or alcohols, respectively. For the activation of the carboxylicacids “in situ” generated phosphoric acid diester chlorides were applied.
An N‐heterocyclic carbene (NHC), generated by cathodic reduction of BMIm BF4, mediates the oxidative esterification of aromatic aldehydes with organic bromides in the corresponding ionic liquid as solvent. The product recovery by simple extractive work‐up with diethyl ether allowed the ionic liquid to be recycled up to 9 times for subsequent electrolyses, with no significant loss in the product yield