Synthèse régiosélective par voie organozincique de 1,4-diamines primaires propargyliques et applications
摘要:
Reactive organozincs obtained from allylic and propargylic bromides regioselectively react with the N-trimethylsilylaldimines prepared in situ from the corresponding carbamates of various alpha-acetylenic gamma-aminoaldehydes to form a new amine function. Thus, we have achieved alpha-acetylenic primary 1,4-diamines: H2N-CH(R')-C equivalent to C-CH(R)-NH2 (R not equal R' or R=R'), then alpha-ethylenic primary 1,4-diamines (E) or (Z) through a partial hydrogenation.
Synthèse regiosélective par voie organométallique d’amines primaires propargyliques γ-fonctionnelles et applications
摘要:
Reactive organozincs obtained from allylic and propargylic bromides regioselectively react with the N-trimethylsilylaldimine prepared in situ from the diethylmonoacetal of acetylenedicarbaldehyde and lead to unsatured gamma-functional primary amines which possess many synthetic uses.