Nickel-catalyzed cyanation of phenol derivatives activated by 2,4,6-trichloro-1,3,5-triazine
作者:Liang Wang、Yaoyao Wang、Jun Shen、Qun Chen、Ming-Yang He
DOI:10.1039/c8ob01034j
日期:——
A nickel-catalyzed cyanation of phenolderivatives activated by 2,4,6-trichloro-1,3,5-triazine (TCT) using aminoacetonitrile as the cyanating agent is described. This catalytic system delivered the desired products in moderate to good yields with good substrate compatibility. The readily available starting materials, cost-effective nickel catalyst and metal-free cyanating agent are the major features
To explore further the practical uses of highly active manganese (Mn*), a variety of alcohols were treated with Mn*, and the resulting complexes were coupled with acid chlorides and/or acetic anhydride in the absence of any extra catalyst. The subsequent reactions took place smoothly under mild conditions, providing the corresponding O-acylation products in good to excellent isolated yields.
Cu-Catalyzed Esterification Reaction via Aerobic Oxygenation and C–C Bond Cleavage: An Approach to α-Ketoesters
作者:Chun Zhang、Peng Feng、Ning Jiao
DOI:10.1021/ja4085463
日期:2013.10.9
The Cu-catalyzed novel aerobic oxidativeesterification reaction of 1,3-diones for the synthesis of α-ketoesters has been developed. This method combines C-C σ-bond cleavage, dioxygen activation and oxidative C-H bond functionalization, as well as provides a practical, neutral, and mild synthetic approach to α-ketoesters which are important units in many biologically active compounds and useful precursors
已开发出用于合成 α-酮酯的 Cu 催化的新型 1,3-二酮有氧氧化酯化反应。该方法结合了 CC σ-键裂解、双氧活化和氧化 CH 键功能化,并为 α-酮酯提供了一种实用、中性和温和的合成方法,α-酮酯是许多生物活性化合物中的重要单元和各种有用的前体。功能组转换。在机理研究的基础上提出了一个合理的激进过程。
Palladium-Catalyzed Carbonylative Synthesis of Benzyl Benzoates Employing Benzyl Formates as Both CO Surrogates and Benzyl Alcohol Sources
作者:Ming Lai、Xinxin Qi、Xiao-Feng Wu
DOI:10.1002/ejoc.201900700
日期:2019.6.23
An efficient and convenient palladium‐catalyzed carbonylation reaction for the synthesis of benzyl benzoates from aryl bromides has been developed. Benzyl formates have been explored as a new type of efficient and useful CO sources. A wide range of benzyl benzoates were obtained in good to excellent yields.
Copper-Catalyzed Cyanations of Aromatic Bromides with Benzoyl Cyanide
作者:Liang Wang、Liang Pan、Qun Chen、Mingyang He
DOI:10.1002/cjoc.201400637
日期:2014.12
Aromatic nitriles were synthesized through copper‐catalyzed cyanations of aromatic bromides using benzoyl cyanide as the cyanide source. A series of functional groups were tolerated under the reaction conditions to provide the products in good yields. Moreover, this protocol avoids using of highly toxic alkali cyanides and expensive palladium catalysts.