Synthesis 2025; 57(02): 447-456
DOI: 10.1055/a-2415-1629
paper
Special Topic Dedicated to Prof. H. Ila

Lewis Acid Catalyzed SN2-Type Domino Ring-Opening Cyclization (DROC) of Aziridines with Alkynes: A Synthetic Route to 2,3-Dihydropyrroles

Dipti Shukla
,
Suraj Kashyap
,
,
Amit Kumar Sharma
,
,
Noimur Rahman
,
M.K.G. is grateful to the Science and Engineering Research Board (SERB), India and the Indian Institute of Technology Kanpur (IIT-Kanpur), India for financial support. D.S., A.B., and N.R. thank IIT-Kanpur, India. S.K. and B.S. thank the Council of Scientific and Industrial Research (CSIR), India and A.K.S. thanks the University Grants Commission (UGC), India for research fellowships.


Dedicated to Prof. H. Ila on the occasion of her 80th birthday.

Abstract

A simple strategy for the synthesis of a variety of dihydropyrroles in good to excellent yields via a Lewis acid catalyzed, quaternary ammonium salt mediated SN2-type ring opening followed by cyclization of activated aziridines with alkynes in a domino fashion is described. The formation and the observed stereoselectivities of the products via an SN2-/double SN2-type ring-opening pathway are rationalized by mechanistic studies.

Supporting Information



Publication History

Received: 06 August 2024

Accepted after revision: 13 September 2024

Accepted Manuscript online:
13 September 2024

Article published online:
17 October 2024

© 2024. Thieme. All rights reserved

Georg Thieme Verlag KG
Rüdigerstraße 14, 70469 Stuttgart, Germany