Cobalt-Catalyzed Cross-Couplings between Alkenyl Acetates and Aryl or Alkenyl Zinc Pivalates
作者:Jie Li、Paul Knochel
DOI:10.1002/anie.201805486
日期:2018.8.27
(5 mol %) in the presence of 2,2′‐bipyridyl (5 mol %) enables electrophilic alkenylations between easily accessible alkenyl acetates or tosylates and various functionalized aryl zinc pivalates at ambient temperature. This cobalt‐catalyzed process was further applicable to alkenyl zinc pivalates to provide substituted 1,3‐dienes.
Nickel-catalyzed cross-coupling of β-carbonyl alkenyl pivalates with arylzinc chlorides
作者:Wen-Jing Pan、Zhong-Xia Wang
DOI:10.1039/c7ob02947k
日期:——
The nickel-catalyzed cross-coupling reaction of β-carbonyl alkenyl pivalates with arylzinc reagents generates 3-aryl-substituted α,β-unsaturated carbonyl compounds via C–O bond cleavage. The reaction features mild reaction conditions, a wide scope of substrates, and good functional group tolerance.
Cross-Coupling of Alkenyl/Aryl Carboxylates with Grignard Reagent via Fe-Catalyzed C−O Bond Activation
作者:Bi-Jie Li、Li Xu、Zhen-Hua Wu、Bing-Tao Guan、Chang-Liang Sun、Bi-Qin Wang、Zhang-Jie Shi
DOI:10.1021/ja907281f
日期:2009.10.21
Iron-catalyzed cross-coupling of alkenyl/aryl carboxylates with primary alkyl Grignard reagent was described. This reaction brought a new family of electrophiles to iron catalysis. The combination of an inexpensive carboxylate electrophile and an iron catalyst would generate ample advantages.
Cross-Coupling of Alkenyl/Aryl Carboxylates with Grgnard Reagents via Fe-Catalyzed C-O Bond Activation
作者:Li, Bi-Jie、Zhang, Xi-Sha、Shi, Zhang-Jie
DOI:10.15227/orgsyn.091.0083
日期:——
Iron-Catalyzed Cross-Coupling of Alkenyl Acetates
作者:Dominik Gärtner、André Luiz Stein、Sabine Grupe、Johannes Arp、Axel Jacobi von Wangelin
DOI:10.1002/anie.201504524
日期:2015.9.1
unreactive in cross‐coupling reactions which mostly employ more electrophilic halides or activated esters (triflates, tosylates). Acetates are cheap and easily accessible electrophiles but have not been used in cross‐couplings because the strong CO bond and high propensity to engage in unwanted acetylation and deprotonation. Reported herein is a selective iron‐catalyzedcross‐coupling of diverse alkenyl