1: sodium tetrahydroborate / methanol / 1 h / 0 - 20 °C / |Inert atmosphere
2: phosphorus tribromide / toluene / 0.5 h / 0 - 100 °C / |Inert atmosphere
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参考文献
Biota Europe Ltd.; Lunniss, Christopher James; Palmer, James T.; Pitt, Gary Robert William; Davies, David; Axford, Lorraine Claire
Patent: US2013/252938 A1, 2013 ;