Sodium Hydroxide → HCID 9863994, compound

Participants

Reaction Steps

316 mg (0.83 mmol) of 4-(5-methoxymethyl-5-methyl-2,3,4,5-tetrahydrobenzo[b]thiepin-8-ylethynyl)-benzoic acid methyl ester was dissolved in 8 ml of THF/EtOH (1/1) and treated with 1.38 ml of 3N NaOH (5 eq.). The reaction flask was kept in the dark and stirring continued for 18 h at room temperature. The mixture was then poured onto crushed ice/ HCl, extracted twice with diethylether, the organic phase was washed with brine, dried over magnesium sulfate, filtrated and evaporated to dryness. Crystallization of the residue from hexane/ethylacetate yielded 282 mg of the title product as white crystals of m.p. 182-183° C.

Provenance & Evidence