Hydrazine, propyl- → HCID 53718695, compound

Participants

Reaction Steps

A mixture of 2.5g of tetrahydro-3,5-bis[[3-(trifluoromethyl)phenyl]methylene]-4H-thiopyran-4-one-1,1-dioxide and n-propyl hydrazine in 100ml of methanol is heated at reflux temperature for 1 hour. The crystals obtained on cooling to 5°-10°C are collected and dried in vacuo over phorphorus pentoxide at 50°C to yield 1.7g of the title compound, melting point 190°-191°C. The filtrate is diluted with water giving additional crude material which is recrystallized from methanol to give 400mg of the title compound, melting point 191°-193.5°C.

Provenance & Evidence