Diboron → 3-Hydroxymethyl-10,11-dihydrodibenzo[b,f]thiepin
Reaction equation
[CH:1]1[C:11]2[CH2:10][CH2:9][C:8]3[CH:12]=[CH:13][CH:14]=[CH:15][C:7]=3[S:6][C:5]=2[CH:4]=[C:3]([C:16](O)=[O:17])[CH:2]=1.B#B>O1CCCC1.O>[OH:17][CH2:16][C:3]1[CH:2]=[CH:1][C:11]2[CH2:10][CH2:9][C:8]3[CH:12]=[CH:13][CH:14]=[CH:15][C:7]=3[S:6][C:5]=2[CH:4]=1Participants
5
Reactant 2
Product 1
Reagents, catalysts & solvents 2
Procedure
Dissolve 7.5 gm. of 10,11-dihydrodibenzo[b,f]-thiepin-3-carboxylic acid in 140 ml. of tetrahydrofuran. With stirring, add 90 ml. of 1 N diborane in tetrahydrofuran. Stir at room temperature for 2 hours and dilute the reaction mixture with water. Extract into ether, and evaporate the ether extract to dryness. Stir the residue with hexane and filter to obtain the title product (m.p., 82°-84° C.).