Stereoselective Synthesis of 1,3-Amino Alcohols by the Pd-Catalyzed Cyclization of Trichloroacetimidates
作者:Yuanzhen Xie、Kai Yu、Zhenhua Gu
DOI:10.1021/jo402681z
日期:2014.2.7
The synthesis of 4-vinyl-5,6-dihydro-1,3-oxazines, precursors of 1,3-aminoalcohols, using the palladium-catalyzed cyclization of trichloroacetimidates is reported. The reaction favors the formation of the 4,6-cis-isomers with up to >20:1 diastereoselectivity. Chemoselective hydrolysis of the resulting 5,6-dihydro-1,3-oxazines was also investigated.