Abstract The generality of the intramolecular cyclization of suitable nucleophilic sites to a S + CH 2 center created by a sila‐Pummerer rearrangement has been investigated. Successful nucleophilic sites included the OH group (in alcohols, carboxylic acids, and hydroxylamines) and the NH group (in amines and carbamates): attempts to produce carbon‐based nucleophilic sites were not effective. Successful cyclizations were achieved to produce sulfur heterocycles with 5‐, 6‐, and 7‐membered rings.
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