Hydrazine hydrate (1:1) → HCID 21450276, compound

Participants

Reaction Steps

Methyl 3-[5-acetamido-2-(3-t-butylamino-2-hydroxypropoxy)benzoyl]propionate was hydrolysed by aqueous acid and the solution was neutralised and evaporated to dryness. 3-[5-Amino-2-(3-t-butylamino-2-hydroxypropoxy)benzoyl]propionic acid was extracted from the residue with hot ethanol and the combined extracts were evaporated to give the crude acid, which was cyclised by hydrazine hydrate as in Example 2(iv) to give 6-[5-amino-2-(3-t-butylamino-2-hydroxypropoxy)phenyl]-4,5-dihydro-3(2H)-pyridazinone.

Provenance & Evidence