Abstract The reactions of 3-chloro-3-(chlorosulfanyl)-2, 2, 4, 4-tetramethylcyclobutan-1-one (2) with N, O, S, and P nucleophiles occur by substitution of Cl at the S-atom. Whereas, in the cases of secondary amines, alkanols, phenols, thiols, thiophenols, and di-and trialkyl phosphates, the initially formed substitution products were obtained, the corresponding products with allyl and propargyl alcohols undergo a [2, 3]-sigmatropic rearrangement to ...
