反应详情

A 1 liter jacketed photochemical reaction vessel equipped with magnetic stirrer and pyrex immersion well is charged with 418 g camphene (807, Aldrich) and 372 g acetaldehyde and 30 g diacetyl (photochemical hydrogen abstractor). The mixture is irradiated with a 450 medium pressure mercury lamp (Hanovia) for 55 hours, during which time five 30 g portions of diacetyl are added at varying intervals. The reaction mixture is combined with 150 g of 1,2,4-trimethyl benzene and washed with water. The material is distilled without fractionation and then redistilled through a 5 foot Vigreux column to yield 224 g colorless product, b.p. 70° -72° (55 mm Hg).

1. customequipped with magnetic stirrer
2. additionare added
3. washwashed with water
4. distillationThe material is distilled without fractionation
5. distillationredistilled through a 5 foot Vigreux column