1.1: ammonium hydroxide; zinc / water / 20 °C / Cooling
1.2: -10 °C / pH 1
2.1: thionyl chloride / 1 h / Reflux
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参考文献
WIGERINCK, Piet Tom Bert Paul; ANDREWS, Martin James Inglis; De WEER, Marc Maurice Germain; SABOURAULT, Nicholas Luc; KLUGE, Stefan Christian
Patent: US2011/118269 A1, 2011 ;