hydrogenchloride; 1,1,2,2-tetramethylethylene; 3-chloro-benzenecarboperoxoic acid 1.) dichloromethane, 25 deg C, 30 min; Multistep reaction. Further byproducts given. Title compound not separated from byproducts;

tetrabutyl ammonium fluoride in tetrahydrofuran 3 h; Ambient temperature;

sodium ethanolate

potassium tert-butylate in dimethyl sulfoxide T=25.9 - 119.9°C; ΔG, ΔH, ΔS, stabilization effects of thio groups; Equilibrium constantThermodynamic data;