Unexpected thermal extrusion of CO2 from 3-benzylthiazolidin-2-one 1,1-dioxides to give 2-phenylthiazolines and thiazoles
作者:R.Alan Aitken、David P. Armstrong、Shaun T.E. Mesher、Ronald H.B. Galt
DOI:10.1016/0040-4039(94)88100-6
日期:1994.8
Flash vacuum pyrolysis of a series of chiral 3-benzylthiazolidin-2-one 1,1-dioxides 5, readily prepared from amino acids, results mainly in loss of SO2 to give an alkene and benzyl isocyanate, but a significant minor pathway involves unexpected loss of CO2 and water to give 2-phenylthiazolines 13 and derived thiazoles.
由氨基酸容易制得的一系列手性3-苄基噻唑烷-2--2-酮1,1-二氧化物5的快速真空热解主要导致SO 2损失,得到烯烃和异氰酸苄酯,但是一个重要的次要途径涉及意外损失CO 2和水,得到2-苯基噻唑啉13和衍生的噻唑。