3,4-bis(Benzyloxy)-6-(cyclohexylethynyl)pyridazine → HCID 178518809, compound

Participants

Reaction Steps

Prepared as described for 4-hydroxy-6-(2-phenethyl)pyridazin-3(2H)-one (Example 1) from 3,4-bis(benzyloxy)-6-(cyclohexylethynyl)pyridazine (Intermediate 17) except that the reaction was carried out in a mixture of methanol and tetrahydrofuran (1:1). The resulting crude product was purified by preparative HPLC under acidic conditions. The solid obtained was recrystallised from methyl tert-butyl ether and ethyl acetate to afford 6-(2-cyclohexylethyl)-4-hydroxypyridazin-3(2H)-one as a cream solid (11% yield).

Provenance & Evidence