Direct Access to SCF3-Substituted 2H-Thiopyrans Via a [4 + 2] Annulation with 1,3-Dienes, AgSCF3, and KI
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A [4 + 2] annulation with 1,3-dienes, AgSCF3, and KI has been established, affording a variety of CF3S-substituted 2H-thiopyrans with high chemo- and regioselectivities. The intermediate (CF3S)2C═S is generated in situ via the reaction of AgSCF3 with KI under... ...
