Borane;tetrahydrofuran → HCID 22139447, compound

Participants

Reaction Steps

To a cooled (0° C.) suspension of 4-benzyloxy-1-(4-methoxy-benzylamino)-thioxanthen-9-one (8.16 g, 18.00 mmol) in dry THF (150 ml) was added Borane-THF complex (90 mmol, 90 ml 1M in THF) in a dropwise fashion. The reaction was allowed to slowly warm to room temperature and stirred for a further 16 hours to give a homogeneous yellow solution. To mixture was then cooled (0° C.) and diluted slowly with acetone (150 ml) and then stirred for 60 minutes at room temperature. The solvent was removed in vacuo to give a crude residue that was diluted in CH2Cl2 (100 ml) and the washed with a saturated solution of NaHCO3 (100 ml), dried using MgSO4, filtered and concentrated in vacuo to give the title compound as a mild amber oil (7.90 g, 99.8%) m/z (LC-MS, ESP): 438 [M+H]+, R/T=5.01 mins.

Provenance & Evidence