Cyclizations of Dianions from 2-Imino-1,2-diphenylethanone to Oxazolines, Oxazocines, and Oxazonines
作者:Kailash Nath Mehrotra、Indra Sen Singh、Jalpana Roy
DOI:10.1246/bcsj.58.2399
日期:1985.8
2-diphenylethanone with sodium in ether and subsequent addition of carbon disulfide or ethylchloroformateresulted in the formation of 3,4,5-trisubstituted 4-oxazoline-2-thiones and 2-ones, respectively. 1,4-Oxazonines and 1,4-oxazocines were also synthesised from the reaction of 2-imino-1,2-diphenylethanone with sodium in THF followed by addition of dihaloalkanes.