Sodium Hydroxide → HCID 23508312, compound

Participants

Reaction Steps

A solution of ethyl {5-[2-(2-o-tolylamino-benzoxazol-6-yl)-acetylamino]-indan-1-yl}-acetate [0.255 g, Reference Example 1(b)] in ethanol, under a nitrogen atmosphere, was treated with sodium hydroxide solution (1.6 mL, 1M) and the mixture was heated at reflux temperature for 1.5 hour. The reaction mixture was evaporated and the residual orange oil was treated with water (20 ml) and a few drops of tetrahydrofuran. The mixture was filtered and the filtrate was acidified to pH 1 by addition of concentrated hydrochloric acid. The resulting precipitate was filtered at 0° C., then washed twice with a little water and then dried in a dessicator at 50° C. to give the title compound (0.239 g) as a cream coloured solid. LC-MS: RT=3.22 minutes (100% by ELSD); MS(ES+) 456(MH+), 478(MNa+)

Provenance & Evidence