Raji Reddy C, Warudikar K, Sridhar B. Synthetic Access to Cyclopenta[
a]inden-2(1
H)-ones from Morita-Baylis-Hillman Products of 2-Alkynyl Benzaldehydes.
ACS OMEGA 2018;
3:15734-15742. [PMID:
31458226 PMCID:
PMC6644149 DOI:
10.1021/acsomega.8b02111]
[Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/20/2018] [Accepted: 11/07/2018] [Indexed: 06/10/2023]
Abstract
A new strategy for the synthesis of cyclopenta[a]inden-2(1H)-ones has been developed. An intramolecular Pauson-Khand reaction of the Morita-Baylis-Hillman (MBH) adducts, derived from 2-alkynyl benzaldehydes, provided the consequent novel cyclopenta[a]inden-2(1H)-ones bearing multifunctionalities including an ester group at the fused ring junction (tert-carbon center). The generality of this approach was illustrated by studying the several MBH derivatives containing diverse substitutions/functionalities.
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