Journal
JOURNAL OF ORGANIC CHEMISTRY
Volume 82, Issue 13, Pages 6932-6939Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.joc.7b01285
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- Council of Scientific and Industrial Research (CSIR)-New Delhi as part of XII five-year programme project under ORIGIN [CSC-108]
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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 corresponding 3-iodo spirocyclohexadienones. The sulphonamide functionality was further utilized to construct the tricyclic fused-sultam framework.
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