Easy and straightforward access to α-aminonitrile units by one-potsynthesis through a reductive Strecker cyanation from readily available formamides. The reaction is broad in scope and the conditions are mild, inexpensive, and easy to set-up, providing numerous α-aminonitriles in good yields (34 examples, 41–94 % yield).
Preparation of non-racemic single-stereocentre α-aminonitriles and a study of their fate in Bruylants reactions
作者:Virginie Beaufort-Droal、Elisabeth Pereira、Vincent Théry、David J. Aitken
DOI:10.1016/j.tet.2006.09.087
日期:2006.12
for the preparation of four representative enantiomerically enriched α-aminonitriles possessing only one stereogenic centre; best results were observed using Burgess' salt (yield up to 87%, er up to 92/8) or the trifluoroacetic anhydride–triethylamine combination (yield up to 98%, er up to 86/14). Two of the aminonitriles thus obtained were subjected to Bruylants reactions with a methyl Grignard reagent