tert-Butanol → HCID 9954314, compound

Participants

Reaction Steps

3 mmol of Ethyl 5-cyano-1,4-dihydro-2,6-dimethyl-4-(4-oxo-2-phenyl-4H-1-benzothiopyran-8-yl)-3-pyridinecarboxylate (DE 33 11 005) and 15 mmol of NaBH4 are initially introduced into 10 ml of t-butanol, 1.8 ml of MeOH are added at 60° C. and the mixture is kept at 65° C. for 8 hours. Customary working up gives the title compound.

Provenance & Evidence