1-Bromooctane → HCID 3715235, compound

Participants

Reaction Conditions

Reaction Steps

A mixture of 19.63 g 3-methyl-3-pyrazolin-5-one and 42.30 g 1-bromooctane was stirred and heated at 135° C. for 50 hour. After cooling, the reaction mixture was triturated with 200 ml water, treated with 17.00 g sodium bicarbonate in small portions, and heated to 100° C. for 1 hour. After cooling, the mixture was extracted with chloroform (3×100 ml portions). The combined extracts were dried over anhydrous calcium chloride and the solvent evaporated to give an oily residue crystallized from hexane (at -5° C.) to give 2,4-dihydro-5-methyl-2-octyl-3H-pyrazol-3-one (17.50 g, 42% yield) as white plates, m.p. 59° C.

Provenance & Evidence