反应详情

温度

-45 °C

7-(Phenoxyacetamido)-3-methyl-3-cephem-4-carboxylic acid (11.38 mmoles) is dissolved in 80 ml of methylene chloride. Dicyclohexylamine or diisopropylamine (13 mmoles) is added with stirring and 1.75 ml of dichlorodimethylsilane is added. After stirring for 30 minutes, the mixture is cooled to -45° C and an additional 27.77 mmoles of the same amine as used above is added followed by 3 g of finely powdered PCl5.

1. stirringAfter stirring for 30 minutes
2. additionabove is added