Hydrazine hydrate (1:1) → HCID 20309593, compound

Participants

Reaction Steps

Methyl 3-[2-(3-t-butylamino-2-hydroxypropoxy)-5-methoxybenzoyl]propionate was cyclised with hydrazine hydrate in a similar manner to that described in Example 2 (ii) to give 6-[2-(3-t-butylamino-2-hydroxypropoxy)-5-methoxyphenyl]-4,5-dihydro-3(2H)-pyridazinone (m.p. 127°-128° C). The hydrochloride, crystallised from methanolether, had m.p. 227°-229° C. (Found: C, 56.24; H, 7.24; Cl, 9.06; N, 10.75; C18H27N3O4.HCl requires: C, 56.03; H, 7.31; Cl, 9.19; N, 10.88%)

Provenance & Evidence