Reductive Transformations of Carbonyl Compounds Catalyzed by Rhodium Supported on a Carbon Matrix by using Carbon Monoxide as a Deoxygenative Agent
作者:Niyaz Z. Yagafarov、Dmitry L. Usanov、Alexey P. Moskovets、Nikolai D. Kagramanov、Victor I. Maleev、Denis Chusov
DOI:10.1002/cctc.201500493
日期:2015.9.1
An efficient method for the rhodium on carbon matrix catalyzed preparation of secondary and tertiary amines, cyanoesters, and nitriles through the reductive amination/alkylation of carbonyl compounds was developed, including a convenient procedure for the tandem formal reductive addition of acetonitrile to aldehydes. The catalyst could be reused, and at least three consecutive reaction cycles were
Atom- and Step-Economical Preparation of Reduced Knoevenagel Adducts Using CO as a Deoxygenative Agent
作者:Pavel N. Kolesnikov、Dmitry L. Usanov、Evgeniya A. Barablina、Victor I. Maleev、Denis Chusov
DOI:10.1021/ol502424t
日期:2014.10.3
A highly efficient one-step Rh-catalyzed preparation of reduced Knoevenagel adducts of various aldehydes and ketones with active methylene compounds has been developed. The protocol does not require an external hydrogen source and employs carbon monoxide as a deoxygenative agent. The use of malonic acid or cyanoacetamide enabled efficient formal deoxygenative addition of methyl acetate or acetonitrile to aldehydes. The developed methodology was applied to the synthesis of the precursors of biomedically important compounds.