化学合成。
化学合成
合成路线 1(1. 合成:87001-32-9)
产率:89%
合成条件:With oxalyl dichloride In dichloromethane; N,N-dimethyl-formamide at -20 - 20℃; for 18 h;
实验步骤:1.4:4-苄氧基苯磺酰氯将55ml(639mmol)草酰氯在250ml二氯甲烷中的溶液滴加到61g(213mmol)4-苄氧基苯磺酸钠盐在200ml二甲基甲酰胺中的溶液中, 保持温度在-20℃至-10℃之间。加入后,将反应介质缓慢恢复至环境温度,然后搅拌18小时,倒入冰中,用乙酸乙酯萃取。洗涤有机相。 用水和饱和氯化钠水溶液洗涤并真空浓缩。 获得54g(89%)的4-苄氧基苯磺酰氯,为白色固体。
参考文献:
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