TMSCl‐Mediated Carbocyclization‐Phosphorothiolation of Alkynes to Access Phosphorothiolated Phenanthrene and 2H‐Chromene Derivatives
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M Chen, Y Fu, W Wu, J Liu, X Liu…
Advanced Synthesis & …, 2026
Wiley Online Library
A practical and mild strategy for TMSCl‐mediated electrophilic carbocyclization–phosphorothiolation of alkynes with N‐phosphorothiosuccinimide has been developed. This method enables efficient access to a wide range of fused phosphorothiolated phenanthrene and 2H‐chromene derivatives in 61–86% yields from readily available o‐alkynylbiphenyls and but‐1‐yne‐1, 4‐diyldibenzenes, showcasing a broad substrate scope. Notably, o‐alkynylbiphenyls bearing electron‐rich OMe groups undergo a phosphorothiolation …
