Organocatalytic domino double Michael reaction of ethyl (E)-7-oxohept-2-enoate and ,-unsaturated aldehydes: Efficient asymmetric synthesis of cyclohexanes with four contiguous stereocenters
Organocatalytic domino double Michael reactions of ethyl (E)-7-oxohept-2-enoate and ,-unsaturated aldehydes provided ethyl 2-(2,4-diformyl-3-phenylcyclohexyl)acetate with excellent diastereoselectivities (>20:1 dr) and enantioselectivities (>99% ee). The adducts were further transformed to octahydro-3H-2-benzopyran-3-ones, octahydroisoquinolin-3(2H)- ones, and decahydro-5H-oxazolo[2,3-a]isoquinolin-5-ones. Georg Thieme Verlag Stuttgart - New York.
Hong, Bor-Cherng,Sadani, Amit A.,Nimje, Roshan Y.,Dange, Nitin S.,Lee, Gene-Hsiang
supporting information; experimental part
p. 1887 - 1895
(2011/08/05)
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