Synthesis and reactions of N,N-bis[1-(trimethylsiloxy)alkyl]-formamides: preparation of (±)-argemonine and (±)-norargemonine
作者:A. Peter Johnson、Richard W. A. Luke、Gurmaj Singh、Andrew N. Boa
DOI:10.1039/p19960000907
日期:——
Symmetrical and unsymmetrical N,N-bis[1-(trimethylsiloxy)alkyl]formamides are prepared and their reactions investigated, including an application to the synthesis of the pavine alkaloids (±)-argemonine and (±)-norargemonine
give derivatives 6 has been studied. Particularly good selectivities (82−84%) were observed when R is a benzylic group. On the basis of these results, a practical and enantioselective synthesis of the natural alkaloid (−)-argemonine is presented.