HCID 67834280, compound → HCID 14458244, compound

Participants

Reaction Steps

A quantity of 3.8 g of this hydrazone was suspended in 10 ml of diphenyl ether, followed by stirring at 200°-220° C. (bath temperature) for 3 hours. After cooling, the reaction liquid was purified by silica gel column chromatography (ethyl acetate). Thus there was obtained 1.4 g of 1-pyrazinylcarbonyl-5-methyl-2-pyrazoline (mp. 77°-79° C.). The yield was 36.8%.

Provenance & Evidence