Hydrazine hydrate (1:1) → HCID 178423642, compound

Participants

Reaction Steps

A mixture of 18.3 g of 4-(2-chloro-4,6-dimethylnicotinoyl)-2,6-di-tertiary butylphenol, 11 g of hydrazine hydrate and 100 ml of pyridine is reacted and the product is treated in a similar manner as Example 1 to give 15.5 g of 3-(3,5-di-tertiary butyl-4-hydroxyphenyl)-4,6-dimethyl-1H-pyrazolo[3,4-b]pyridine as white crystals, melting at 257°-258° C.

Provenance & Evidence