is achieved under mild conditions. The reagent combination employed for this transformation is polymethylhydrosiloxane (PMHS) in the presence of either tetrakis (triphenylphosphine) palladium (0) [Pd(PPh 3 ) 4 ], titanium (IV) isopropoxide [Ti(i-PrO) 4 ] or palladium on carbon (Pd/C).
Anthracene–rhodium complexes with metal coordination at the central ring – a new class of catalysts for reductive amination
作者:Ekaterina Kuchuk、Karim Muratov、Dmitry S. Perekalin、Denis Chusov
DOI:10.1039/c8ob02561d
日期:——
coordinated at the central ring was applied in catalysis for the first time. As a result, a simple and efficient protocol for reductive amination that involves CO as a reducing agent has been developed. The rhodium complex [(cyclooctadiene)Rh(C10H4Me2(OMe)4)]+ (1 mol%) catalyses such reactions undermildconditions (40–130 °C) and produces a variety of amines in good yields (74–95%) without affecting the functional
首次在中心环上配位了具有金属配位作用的新型蒽配合物。结果,已经开发出一种简单有效的还原胺化方案,其中涉及CO作为还原剂。铑配合物[(环辛二烯)Rh(C 10 H 4 Me 2(OMe)4)] +(1 mol%)在温和的条件下(40-130°C)催化这种反应,并以高收率产生多种胺( 74–95%),而不会影响官能团。该协议适用于醛(芳族和脂族),酮(芳族和脂族)和胺(芳族和脂族;伯和仲)的所有组合。
Iridium-Catalyzed Decarboxylative N-Alkylation of α-Amino Acids with Primary Alcohols
A new decarboxylative N-alkylation reaction of α-aminoacids has been developed. A variety of tertiary amines were obtained in good to excellent yields via the decarboxylative N-alkylation reaction of α-aminoacids with primary alcohols catalyzed by a Cp*Ir complex.
unprecedented combination of light and P(III)/P(V) redox cycling for the efficient deoxygenation of aromatic amine N-oxides. Moreover, we discovered that a large variety of aliphatic amine N-oxides can easily be deoxygenated by using only phenylsilane. These practically simple approaches proceed well under metal-free conditions, tolerate many functionalities and are highly chemoselective. Combined experimental