Journal
ORGANIC LETTERS
Volume 12, Issue 18, Pages 4184-4187Publisher
AMER CHEMICAL SOC
DOI: 10.1021/ol1017905
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- Korea Research Institute of Chemical Technology [CBM31-A1200-01-00-00]
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Asymmetric transfer hydrogenation (ATH) of cyclic sulfamidate imines 4 and 9, using a HCO(2)H/Et(3)N mixture as the hydrogen source and well-defined chiral Rh catalysts (S,S)- or (R,R)-2, Cp*RhCl(TsDPEN), effectively produces the corresponding cyclic sulfamidates with excellent yields and enantioselectivities at room temperature within 0.5 h. ATH of 4,5-disubstituted imines 9, having preexisting stereogenic centers, is shown to take place with dynamic kinetic resolution.
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