Harnessing of Morita–Baylis–Hillman (MBH) carbonates of acetylenic aldehydes as handy synthons has allowed a facile synthesis of azaspirocyclohexadienones by sequential DABCO-promoted sulfonamidation/ICl-mediated ipso-iodocyclization reactions. A variety of MBH-carbonates having aryl or heteroaryl groups on the alkyne functionality fruitfully participated in the one-pot ipso-annulation reaction to provide the
森田-的Baylis-希尔曼(MBH)炔醛作为方便的合成子的
碳酸酯的利用已经允许通过顺序
DABCO促进的磺酰胺化azaspirocyclohexadienones的简便合成/ ICl的介导的本位-iodocyclization反应。各种具有对炔官能的芳基或杂芳基MBH-
碳酸盐卓有成效参加了一锅本位-annulation反应以提供相应的3-
碘spirocyclohexadienones。磺酰胺官能团被进一步用于构建
三环稠合-sultam构架。