Water → 3-(Phenyliminomethyl)dibenzo[b,f]thiepin-5,5-dioxide

Participants

Reaction Steps

Heat a mixture of 675 mg (2.5 mmoles) of dibenzo[b,f]thiepin-3-carboxaldehyde-5,5-dioxide and 465 mg of aniline (5 mmoles) in 20 ml of toluene, under reflux, with azetropic removal of water for 21 hours. Cool the mixture and filter the insoluble product. Stir the solid in 10 ml of ether containing a few drops of THF for 10 minutes then filter to obtain the pure product, 704 mg, mp: 184°-185°.

Provenance & Evidence