Formation of Unusual Seven-Membered Heterocycles Incorporating Nitrogen and Sulfur by Intramolecular Conjugate Displacement
作者:Zhenhua Chen、Derrick L. J. Clive
DOI:10.1021/jo101539m
日期:2010.10.15
be converted into unusual seven-membered heterocycles containing both nitrogen and sulfur by O-acylation (AcCl or EtOCOCl), N-deprotection (CF3CO2H), and reaction with CS2. In a modification of this process, when the original nitrogen is substituted in the form PhSCH2CON(Me), an azepine derivative is then generated. The ring closures occur by intramolecular conjugate displacement.
衍生自丙烯酸甲酯或丙烯腈且在羟基上带有N-Boc基团β的Baylis-Hillman醇(CH(OH)CHNBoc)可以通过O-酰化反应转化为既含氮又含硫的不寻常的七元杂环(AcCl或EtOCOCl ),N-脱保护基(CF 3 CO 2 H)以及与CS 2的反应。在该方法的改进方案中,当原始氮以PhSCH 2 CON(Me)的形式被取代时,就会生成a庚因衍生物。闭环通过分子内共轭物置换发生。