L 636499 → L 640035

Participants

Reaction Steps

Mix 2.8 gm. of dibenzo[b,f]thiepin-3-carboxylic acid-5,5-dioxide, 50 ml. of tetrahydrofuran, and 30 ml. of 1 N diborane in tetrahydrofuran. Stir at room temperature for 1 hour. Dilute the reaction mixture with water, and extract into ether. Evaporate the ether extract to dryness. Stir the residue in ether, and filter to obtain the title product (m.p., 156°-158° C.).

Provenance & Evidence