excellent yields. It was found that the choice of solvent, olefin, additive and temperature has an important influence on the reaction. Worthy of note is that good results were observed only when using N,N-diprotected allylamines containing carbamate moiety, and the steric properties of allylamines also have important impacts on the regiocontrol. The use of TEMPO (2,2,6,6-tetramethyl-1-piperidinyloxy) or HQ
Palladium catalyst systems for the regioselective Mizoroki–Heck arylation of N,N‐diprotected and N‐protected allylamines with aryl chlorides have been developed. Pd(OAc)2 in combination with appropriate additives could efficiently catalyze the linear arylation of N,N‐diprotected allylamines with aryl chlorides in toluene to give exclusively the γ‐arylated products in good to excellent yields and with
Palladium-Catalyzed Direct Arylation of Allylamines with Simple Arenes
作者:Yichao Lei、Ruiying Qiu、Lingjuan Zhang、Conghui Xu、Yixiao Pan、Xubo Qin、Huanrong Li、Lijin Xu、Yuheng Deng
DOI:10.1002/cctc.201403019
日期:2015.4.20
The Pd(OAc)2‐catalyzed direct CH bond olefination of unreactive arenes with allylamines in the presence of AgOAc was developed. A variety of allylamines including β‐substituted substrates underwent smooth coupling reactions with various arenes to give exclusively the terminal arylation products in high yields with excellent regioselectivities and stereoselectivities. The reaction is compatible with
Iridium-Catalyzed Asymmetric Allylic Substitutions with Bulky Amines/Oxidative Double Bond Cleavage - Entry into the Reetz Synthesis of Amino Alcohols
作者:Kai Seehafer、Chandi C. Malakar、Markus Bender、Jianping Qu、Chen Liang、Günter Helmchen
DOI:10.1002/ejoc.201501333
日期:2016.1
Branched allylic amines were prepared by Ir-catalyzed enantioselective allylic aminations with the bulky N-nucleophiles HN(Boc)2 and HNBn2. The products were transformed into N-protected amino aldehydes, which were either reduced or coupled diastereoselectively with organometallic compounds to give vicinal aminoalcohols. A formal synthesis of the neurokinin receptor antagonist (+)-L-733060 was carried
支链烯丙胺是通过 Ir 催化的对映选择性烯丙胺与庞大的 N-亲核试剂 HN(Boc)2 和 HNBn2 制备的。将产物转化为 N 保护的氨基醛,它们与有机金属化合物非对映选择性地还原或偶联,得到邻氨基醇。作为应用程序进行了神经激肽受体拮抗剂 (+)-L-733060 的正式合成。
β-Regioselective intermolecular Heck arylation of N,N-disubstituted allylamines
作者:J Wu、J.-F Marcoux、I.W Davies、P.J Reider
DOI:10.1016/s0040-4039(00)01914-6
日期:2001.1
β-Regioselectivity has been demonstrated for the Heckarylation of N,N-disubstituted allylamines. The scope and limitations of the reaction were demonstrated by the coupling of N,N-dibenzylallylamine with a variety of substituted aryl triflates. This methodology represents a straightforward approach for the efficient preparation of a variety of primary β-aryl allyl amines.