Dichlorodiphenylsilane → 2,4,8,10-Tetra-tert-butyl-6,6-diphenyl-dibenzo[d,g][1,3,6,2]dioxathiasilocin

Participants

Reaction Conditions

Reaction Steps

A solution of 12.66 grams of dichlorodiphenylsilane in 50 ml of toluene at 5°-10° C. is added dropwise to a solution of 22.14 grams of 2,2'-thiobis(4,6-di-tert-butylphenol) and 10.12 grams of triethylamine in 100 ml of toluene. The reaction mixture is heated at 92° C. until the reaction is complete as evidenced by the disappearance of the phenolic absorption in the IR spectrum. The triethylamine hydrochloride is removed by filtration and the solvent is removed in vacuo. The residue is recrystallized from 2-butanone to give 13.49 grams (43%) of a white solid: mp 202°-205° C.

Provenance & Evidence