A cyclic disulfurane with sulfur-oxygen, sulfur-carbon, and/or sulfur-nitrogen bonds. 3. Some new cyclic S,S-bis(trifluoromethyl)catecholatosulfur(IV) compounds
Self-association of trimethylsilyl-3,6-di-tert-butyl-o-semiquinone
摘要:
The reaction of sodium 3,6-di-tert-butyl-o-semiquinolate with Me3SiCl in THF leads to the formation of 2-(2'-trimethylsiloxy-3',6'-di-tert-butylphenoxy)-2-trimethylsiloxy-3,6-di-tert-butylcyclohexadien-3,5-one 1. On the basis of IR and UV spectroscopy and analysis of the reaction products, it has been determined that the cyclohexadiene structure 1 is preserved on heating to moderate temperatures or on reaction with water or HCl, but photolysis leads to its decomposition, and so does reaction with metallic sodium or alkali. A scheme of the process is propounded.