反应详情

Ethyl diazoacetate (43.4 g, 0.38 mol) was added slowly (syringe pump) over a period of 7 hours to a mixture of benzene (594.32 g, 7.61 mol) and tetrakis (perfluorobenzoato) dirhodium(II) (0.84 g, 0.16 mol). After stirring at room temperature for 6 hours, the solvent was removed and the oily residue distilled in vacuo to give 50.44 g (81%) of ethyl 1,3,5-cycloheptatriene-1-carboxylate: bp 90°-96° C. 2.4-3.0 mm Hg);

1. customthe solvent was removed
2. distillationthe oily residue distilled in vacuo