- Metal-free reduction of unsaturated carbonyls, quinones, and pyridinium salts with tetrahydroxydiboron/water
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A series of unsaturated carbonyls, quinones, and pyridinium salts have been effectively reduced to the corresponding saturated carbonyls, dihydroxybenzenes, and hydropyridines in moderate to high yields with tetrahydroxydiboron/water as a mild, convenient, and metal-free reduction system. Deuterium-labeling experiments have revealed this protocol to be an exclusive transfer hydrogenation process from water. This journal is
- Li, Tiejun,Peng, Henian,Tang, Wenjun,Tian, Duanshuai,Xu, Guangqing,Yang, He
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p. 4327 - 4337
(2021/05/31)
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- REDUCTION OF PHENYL-SUBSTITUTED PYRIDINIUM METHOIODIDES WITH SODIUM BOROHYDRIDE. FORMATION OF AMINE-BORANE COMPLEXES IN WATER.
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Reduction of phenyl-substituted pyridinium methoiodides with sodium borohydride in water afforded besides the desired tetrahydropyridines substantial amounts of amine-borane complexes.Reduction in methanol afforded tetrahydropyridines in high yield, with almost no amine-boranes formed.
- Gessner, Wieslaw,Brossi, Arnold
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p. 911 - 916
(2007/10/02)
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