New Developments in EnantioselectiveBrønsted Acid Catalysis
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Table 7 Scope of the enantioselective transfer hydrogenation of pyridines
91% ee a
92% ee
84% yield b
73% yield
91% ee
90% ee
72% yield
73% yield
89% ee
84% ee
69% yield
55% yield
92% ee
86% ee
66% yield
47% yield
87% ee
89% ee
83% yield
68% yield
a Isolated yields of chromatography
b Enantioselectivities were determined by HPLC analysis