Journal
JOURNAL OF ORGANIC CHEMISTRY
Volume 81, Issue 11, Pages 4654-4663Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.joc.6b00565
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Funding
- Council of Scientific and Industrial Research (CSIR), New Delhi
- IISER Bhopal
- CSIR
- UGC, New Delhi
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An unprecedented enantioselective intramolecular oxa-Michael reaction of enols has been described. A squaramide-containing tertiary amine based bifunctional organocatalyst efficiently activates the o-homoformyl chalcones to provide the chiral isochromenes in moderate yields and good to excellent enantioselectivities. Further, late-stage functionalizations of the vinyl ether moiety of the chiral isochromene products have also been exemplified.
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