Acrolein → HCID 14347532, compound

Participants

Reaction Conditions

Reaction Steps

a solution of bis[3-(trifluoromethyl)phenyl]diazomethane, prepared as in Example 84 from 3,3'-(trifluoromethyl)benzophenone hydrazone (29.9 g) and activated manganese dioxide (30 g) in dichloromethane (150 mL) was added to a solution of acrolein (9.9 mL) in heptane (90 mL) over 15 minutes at 40° C. The solution was heated at 55° C. for 5.5 hours, then the dichloromethane was distilled off and replaced with heptane (100 mL). After the mixture was heated at 90° C. overnight, the solvent was removed in vacuo and the residue was purified by HPLC (dichloromethanehexane; 1:1). Evaporation of the appropriate fractions yielded 30.5 g of 2,2-bis[3-(trifluoromethyl)phenyl]cyclopropanecarboxaldehyde. Crystallization of a portion from hexane gave the analytical sample, 106°-108° C.

Provenance & Evidence