p-bromophenacyl-6-β-<<4-n-butyl-3-(4,4-dimethyloxazolin-2-yl)-1,4-dihydropyridylacetyl>amino>-3,3-dimethyl-7-oxo-4-thia-1-azabicyclo<3.2.0>heptane-2-carboxylate 在
potassium thiophenolate 作用下,
以
N,N-二甲基甲酰胺 为溶剂,
反应 1.0h,
以56.8%的产率得到6-β-<<4-n-butyl-3-(4,4-dimethyloxazolin-2-yl)-1,4-dihydropyridylacetyl>amino>-3,3-dimethyl-7-oxo-4-thia-1-azabicyclo<3.2.0>heptane-2-carboxylic acid potassium salt