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This transformation proceeds via a Michael addition reaction of a C-nucleophile to a vinyl\/allenyl sulfonium system, followed by an intramolecular Corey\u2013Chaykovsky-type reaction, and consequently affords structurally complex bicyclic frameworks. This operationally simple strategy provides an efficient entry to synthetically challenging and densely functionalized carbocyclic scaffolds under mild conditions.<\/jats:p>","DOI":"10.1021\/acs.joc.6c01740","type":"journal-article","created":{"date-parts":[[2026,10,14]],"date-time":"2026-10-14T18:02:23Z","timestamp":1792000943000},"page":"14328-14340","source":"Crossref","is-referenced-by-count":0,"title":["Annulation Reaction of Vinyl\/Propargyl Sulfonium Salts with Carbon Nucleophiles: Stereoselective Synthesis of Functionalized Bicyclo[3.1.0]hexane Scaffolds"],"prefix":"10.1021","volume":"91","author":[{"given":"Vilas M.","family":"Awchar","sequence":"first","affiliation":[{"name":"Indian Institute of Technology Madras , , ,","place":["Chennai, India, 600036"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"family":"Nemichand","sequence":"additional","affiliation":[{"name":"Indian Institute of Technology Madras , , ,","place":["Chennai, India, 600036"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7636-2812","authenticated-orcid":true,"given":"Sundarababu","family":"Baskaran","sequence":"additional","affiliation":[{"name":"Indian Institute of Technology Madras , , ,","place":["Chennai, India, 600036"]}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"316","published-online":{"date-parts":[[2026,10,14]]},"reference":[{"key":"2026103005085403900_cit1a","doi-asserted-by":"publisher","DOI":"10.1016\/j.ejmech.2025.117951","article-title":"The Roles of Fused-Cyclopropanes in Medicinal Chemistry: Insights from the Past Decade","volume":"297","author":"Li","year":"2025","journal-title":"Eur. 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