Synthesis 2022; 54(16): 3623-3630
DOI: 10.1055/a-1828-1560
paper

A Strategy for the Synthesis of Bicyclic Fused Cyclopentenones from MBH-Carbonates of Propiolaldehydes

a   Department of Organic Synthesis & Process Chemistry, CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad 500007, India
b   Centre for X-ray Crystallography, CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad 500007, India
,
Siddique Z Mohammed
a   Department of Organic Synthesis & Process Chemistry, CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad 500007, India
,
Paridala Kumaraswamy
a   Department of Organic Synthesis & Process Chemistry, CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad 500007, India
,
Roshan Chandrakant Kajare
a   Department of Organic Synthesis & Process Chemistry, CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad 500007, India
,
a   Department of Organic Synthesis & Process Chemistry, CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad 500007, India
,
V. S. Rao Ganga
a   Department of Organic Synthesis & Process Chemistry, CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad 500007, India
,
Andhavaram Ramaraju
a   Department of Organic Synthesis & Process Chemistry, CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad 500007, India
,
Balasubramanian Sridhar
b   Centre for X-ray Crystallography, CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad 500007, India
› Author Affiliations
C.R.R. thanks the Science and Engineering Research Board (SERB), New Delhi, for funding the project (EMR/2016/006253). Authors thank the Council of Scientific and Industrial Research (CSIR), New Delhi, for research fellowships. [CSIR-IICT Communication No. IICT/Pubs./2022/013].


Abstract

An effective synthetic approach has been demonstrated for the construction of diverse bicyclic fused cyclopentenones from Morita–Baylis–Hillman (MBH) carbonates of propiolaldehydes. The present transformation was initiated through the propargylation of an alkenylamine with an MBH carbonate followed by the Pauson–Khand reaction of the product methyl 3-(alkenylamino)-2-methylenealk-4-ynoate. This facile method provides diverse scaffolds of cyclopentenone fused with aza-cycles having additional functionality in good yields.

Supporting Information



Publication History

Received: 13 January 2022

Accepted after revision: 19 April 2022

Accepted Manuscript online:
19 April 2022

Article published online:
30 May 2022

© 2022. Thieme. All rights reserved

Georg Thieme Verlag KG
Rüdigerstraße 14, 70469 Stuttgart, Germany