反应详情

To a 100 mL volume three-necked flask with Dean-Stark, 9.38 g of 2-(2,6-diethyl-4-methylphenyl)-2-oxoacetohydrazide ((12-1)-(11)-39), 32 ml of toluene and 4.51 g of benzaldehyde were added under a nitrogen atmosphere, and the mixture was subjected to azeotropic dehydration under 100 mmHg at 50° C. for 2 hours. The reaction mixture was concentrated under reduced pressure to give 12.51 g of 1-[2-(2,6-diethyl-4-methylphenyl)-2-oxoacetyl]-2-(phenylmethylidene)hydrazine ((40-a)-(14)-6).

1. concentrationThe reaction mixture was concentrated under reduced pressure