Journal
JOURNAL OF CHEMICAL SCIENCES
Volume 127, Issue 8, Pages 1417-1426Publisher
INDIAN ACAD SCIENCES
DOI: 10.1007/s12039-015-0913-z
Keywords
Bis-MBH adduct; Oxindole; Nucleophilic substitution; Tri-substituted olefins; bis-pyrazole
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An efficient and facile synthesis of divergent C-3/C-5 bis-functionalized 2-oxindole derivatives has been achieved from 3,5-bis-Morita-Baylis-Hillman (MBH) adducts of oxindole via nucleophilic substitution reaction for the first time. Wider scope of substrate and rate acceleration has been observed in second MBH reaction under typical reaction condition. The synthetic usefulness of bi-functionalized bis-allyl derivative has been demonstrated by the synthesis of potent bis-pyrazole via [3 + 2]-annulation strategy.
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