N-Heterocyclic carbene-catalyzed [4 + 2] annulation of α,β-unsaturated carboxylic acids: enantioselective synthesis of dihydropyridinones and spirocyclic oxindolodihydropyridinones
Keyword(s):
The N-heterocyclic carbene-catalyzed [4 + 2] annulation of α,β-unsaturated carboxylic acid with hydrazones and isatin-derived imines was developed, affording the corresponding dihydropyridinones, respectively, in good yields with high enantioselectivities.
2015 ◽
Vol 13
(1)
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pp. 309-314
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1989 ◽
pp. 1168-1169
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2014 ◽
Vol 53
(43)
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pp. 11611-11615
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Keyword(s):