A convenient synthesis of novel complex morpholines was achieved by a two-step process involving a Petasis three-component coupling reaction of glycolaldehyde, organoboronic acid and different amines, followed by an acid- or base-mediated intramolecular cyclization. The use of threonine derivatives with glycolaldehyde in the Petasis reaction has been studied and successfully applied in the process
Preparation and Use of Aziridino Alcohols as Promoters for the Enantioselective Addition of Dialkylzinc Reagents to <i>N</i>-(Diphenylphosphinoyl) Imines
作者:Pher G. Andersson、David Guijarro、David Tanner
DOI:10.1021/jo970918h
日期:1997.10.1
chiral aziridino alcohols 2-5 has been synthesized starting from either readily available amino acids (L-serine, L-threonine, and allo-L-threonine) or simple olefins (using Sharpless asymmetric aminohydroxylation and dihydroxylation reactions). Chiral ligands 2-5 have been tested as promoters for the enantioselective addition of dialkylzinc reagents to N-(diphenylphosphinoyl) imines 1. The influence