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温度

0 °C

118 mg (3 mmol) of sodium hydride (55 percent in oil) was placed in 3 ml of tetrahydrofuran and cooled to 0° C. 1 g (2.7 mmol) of N,O-bis-(toluenesulfonyl)-ethanolamine in 2 ml of tetrahydrofuran was added in 7 minutes (generation of gas). The reaction mixture was warmed to room temperature. Then 2 ml of ether was added and it was stirred for 50 minutes at room temperature.

1. temperatureThe reaction mixture was warmed to room temperature