sodium cyanoborohydride in trifluoroacetic acid T=20°C;
参考文献
You, Hai Tao; Grosse, Andrew C.; Howard, James K.; Hyland, Christopher J. T.; Just, Jeremy; Molesworth, Peter P.; Smith, Jason A.
Organic and Biomolecular Chemistry, 2011 , vol. 9, # 10 p. 3948 - 3953