Sodium borohydride → HCID 12811314, compound

Participants

Reaction Steps

1.25 g of the product obtained in Example 26 is dissolved in 50 ml of methanol. 300 mg of sodium borohydride is added thereto over 30 minutes at room temperature, and the mixture is stirred for one hour at the same temperature. Then, the same post-treatment as in Example 11 is conducted to obtain a crude product. Recrystallization thereof from ethanol yields 0.9 g of 1-[2-hydroxy-2-(3,4-methylenedioxyphenyl)-1-ethyl]-4-(3-ethyl-2-keto-1-benzimidazolinyl)-piperidine.

Provenance & Evidence