反应详情

A mixture of 11.4 g of the product of Stage A of Example 1, 250 ml of dimethylformamide and 9.81 g of 1-amino 2-methylpyridinium 2,4,6-trimethyl-benzene sulfonate (Synthesis, 1977, page 1, TAMURA, et al.) and 5.11 g of potassium carbonate were stirred for 5 hours at ambient temperature.