Pd/P(i-BuNCH2CH2)3N: an efficient catalyst for Suzuki cross-coupling of aryl bromides and chlorides with arylboronic acids
作者:Sameer Urgaonkar、M. Nagarajan、J.G. Verkade
DOI:10.1016/s0040-4039(02)02189-5
日期:2002.12
Pd(OAc)2 in combination with the commercially available ligand P(i-BuNCH2CH2)3N catalyzes the Suzuki cross-coupling reaction of a wide variety of arylbromides and chlorides with arylboronic acids, affording the desired biaryls in excellent yields. It has also been shown that P(NMe2)3 can be employed as a ligand, though with significantly more limited success.
Activation of reducing agents. Sodium hydride containing complex reducing agents 25. A one pot one reagent cross-coupling reaction of aryl halides
作者:M. Lourak、R. Vanderesse、Y. Fort、P. Caubere
DOI:10.1016/s0040-4039(00)80145-8
日期:——
preparation of NiCRA [NaH-AtmONa-Ni(OAc)2] in the presence of 2,2′-bipyridyl and KI leads to a reagent (termed NiCRA-bpy-KI) which is shown to be one of the most efficient Ni containing reagents reported so far for the cross-coupling of arylhalides.
Palladium-Catalyzed Cyanation of Aryl Sulfonium Salts
作者:Mengna Liu、Benqiang Cui、Chuntao Zhong、Yanhui Shi、Yanfeng Dang、Changsheng Cao
DOI:10.1021/acs.orglett.3c00829
日期:2023.6.9
dimethylsulfonium salts using cheap, nontoxic, and bench-stable K4[Fe(CN)6]·3H2O as the cyanating reagent has been developed. The reactions proceeded well under base-free conditions with various sulfonium salts and provided aryl nitrile with yields of up to 92%. Aryl sulfides can be transformed to aryl nitriles directly via a one-pot process, and the protocol is scalable. Density functional theory calculations
使用廉价、无毒且实验室稳定的 K 4 [Fe(CN) 6 ]·3H 2 O 作为氰化试剂,开发了钯催化的芳基二甲基锍盐氰化反应。该反应在无碱条件下使用各种硫鎓盐进行得很好,并以高达 92% 的产率提供芳基腈。芳基硫化物可以通过一锅法直接转化为芳基腈,并且该协议是可扩展的。进行密度泛函理论计算以研究涉及氧化加成、配体交换、还原消除和再生以产生产物的催化循环的反应机理。
JP5770503
申请人:——
公开号:——
公开(公告)日:——
Activation of reducing agents. Sodium hydride containing complex reducing agents. 32. NiCRAL's as very efficient agents in promoting cross-coupling of aryl halides