Acetic-formic anhydride → HCID 14126428, compound

Participants

Reaction Conditions

Reaction Steps

To a solution of 10,11-dihydro-7-methoxydibenzo[b,f][1,4]thiazepin (6.5 g,26.6 mmoles) in tetrahydrofuran (100 ml) was added 5 ml of formic acetic anhydride. The mixture was stirred at from 0 to 5° C. for 15 minutes. The mixture was then concentrated in vacuo. The residue was taken up in ether and a solid crystallized out. The solid was filtered, washed with ether and air-dried to give the title compound, m.p. 98°-100°.

Provenance & Evidence