A new method for preparation of 3,6-dihydro-2H-1,3-oxazines and explorations of their use in stereoselective synthesis of 1,3-amino alcohol derivatives
作者:John P. Cherkauskas、Andrew M. Klos、Robert M. Borzilleri、Joseph Sisko、Steven M. Weinreb、Masood Parvez
DOI:10.1016/0040-4020(95)01100-5
日期:1996.2
Condensation of β-hydroxy aldehydes with N-sulfonyl aldimines produces 3,6-dihydro-2H-1,3-oxazines in moderate to excellent yields. The process is stereoselective, with the C-2 and C-6 substituents having a trans relationship in these heterocycles. Some transformations of these oxazines as potential acyclic 1,3-amino alcohol synthons are described.
β-羟基醛与N-磺酰基醛亚胺的缩合以中等至优异的产率产生3,6-二氢-2 H -1,3-恶嗪。该方法是立体选择性的,在这些杂环中C-2和C-6取代基具有反式关系。描述了这些恶嗪作为潜在的无环1,3-氨基醇合成子的一些转化。