Electrochemical Synthesis of Allylic Amines from Terminal Alkenes and Secondary Amines
作者:Diana J. Wang、Karina Targos、Zachary K. Wickens
DOI:10.1021/jacs.1c11763
日期:2021.12.29
electrophilic adduct between thianthrene and the alkene substrates. Treatment of these adducts with aliphatic amine nucleophiles and base provides allylic amine products in high yield. This synthetic strategy is also amenable to functionalization of feedstock gaseous alkenes at 1 atm. In the case of 1-butene, high Z-selective crotylation is observed. This strategy, however, is not limited to the synthesis of
amination of allylicalcohols with primary and secondary amines catalyzed by a system made of [Ni(1,5‐cyclooctadiene)2] and 1,1′‐bis(diphenylphosphino)ferrocene was effectively enhanced by adding nBu4NOAc and molecular sieves, affording the corresponding allyl amines in high yield with high monoallylation selectivity for primary amines and high regioselectivity for monosubstituted allylicalcohols. Such remarkable
通过添加n Bu 4 NOAc和分子筛,可以有效地增强由[Ni(1,5-环辛二烯)2 ]和1,1'-双(二苯基膦基)二茂铁构成的体系催化的伯胺和仲胺对烯丙基醇的直接胺化作用。得到高产率的相应烯丙基胺,对伯胺具有高的单烯丙基化选择性,对单取代的烯丙基醇具有高的区域选择性。的如此显着加性效应Ñ卜4 NOAC通过分离和表征一些镍配合物,表现中性电荷的五配位η的关键作用阐明3与较早在烯丙基取代反应中报道的常见阳离子四配位复合物相反,本系统中的乙酸烯丙基乙酸酯络合物。
Direct Allylic Amination of Allylic Alcohol Catalyzed by Palladium Complex Bearing Phosphine–Borane Ligand
The direct electrophilic, nucleophilic, and amphiphilic allylations of allylic alcohol by use of a palladium catalyst and organometallic reagents such as organoborane and organozinc has been developed. The phosphine–borane compound works as the effective ligand for palladium-catalyzed direct allylic amination of allylic alcohol. Thus, with secondary amines, the reaction was completed in only 1 h, even
Amination of Allylic Alcohols in Water at Room Temperature
作者:Takashi Nishikata、Bruce H. Lipshutz
DOI:10.1021/ol900235s
日期:2009.6.4
The "trick" to carrying out regiocontrolled aminations of allylic alcohols in water as the only medium is use of a nanomicelle's interior as the organic reaction solvent. When HCO(2)Me is present, along with the proper base and source of catalytic Pd, allylic amines are cleanly formed at roomtemperature.
Enantioselective Ring-Closing Aminomethylamination of Allylic Aminodienes with Aminals Triggered by C–N Bond Metathesis
作者:Suchen Zou、Zeyu Zhao、Hanmin Huang
DOI:10.1021/acs.orglett.4c00641
日期:2024.3.29
conceptually novel strategy utilizing a cyclopalladated complex as an electrophile to activate the C–N bond for the C–N bond metathesis between allylamines and aminals is developed, which enables an efficient ring-closing aminomethylamination of allylic aminodienes and aminals. The reaction proceeds under mild reaction conditions and displays a remarkable scope. Utilizing a modified Trost-type diphosphine