Trimethyl orthoformate → HCID 19767475, compound

Participants

Reaction Steps

A mixture of 2-cyclobutyl-2-mercaptomethylpropane-1,3-dithiol (4 g, 20 mmol), trimethylorthoformate (2.5 g, 24 mmol) and Amberlyst 15 ion-exchange resin (1 g) was heated to reflux with stirring under a nitrogen atmosphere for 1 hour in dry benzene (100 ml). The mixture was filtered and evaporated to leave a residue which was washed with diethyl ether to give 4-cyclobutyl-2,6,7-trithiabicyclo[2.2.2]octane as a white solid (1.8 g, 43%) mp 112°-114° C., [M+1]+ 219.

Provenance & Evidence