1: thionyl chloride; chlorosulfonic acid / 20 °C
2: sodium hydroxide / water / 2.08 h / 10 - 20 °C
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参考文献
Dale, David J.; Dunn, Peter J.; Golightly, Clare; Hughes, Michael L.; Levett, Philip C.; Pearce, Andrew K.; Searle, Patricia M.; Ward, Gordon; Wood, Albert S.
Organic Process Research and Development, 2000 , vol. 4, # 1 p. 17 - 22