Tributylphosphine → HCID 10509356, compound

Participants

Reaction Steps

A procedure similar to that described in Preparation 4 was repeated, except that 0.5 g of 2-hydroxymethyl-3-(4-phenylbenzyl)imidazo[5,4-b]pyridine (prepared as described in Preparation 54), 0.738 g of 5-(4-hydroxy-benzyl)-3-triphenylmethylthiazolidine-2,4-dione, 0.43 ml of tributylphosphine, 0.4 g of 1,1'-(azodicarbonyl) dipiperidine and 20 ml of benzene were used, to give the title compound as a crude product. This crude product was purified by column chromatography through silica gel, using a gradient elution method, with mixtures of hexane and ethyl acetate in ratios ranging from 1:2 to 1:3 by volume as the eluent, to give 0.95 g of the title compound having Rf=0.44 (on silica gel thin layer chromatography using a 1:3 by volume mixture of hexane and ethyl acetate as the developing solvent).

Provenance & Evidence