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Sku 07-6331-1G
STREM
| Technical Notes: 1. Michael Addition- Michael reaction of malonates to afforded Michael adducts with high yields and enantioselectivities (up to 95%, up to 93% ee). 2.Synthesized a new class of bifunctional catalysts bearing a thiourea moiety and an amino group on a chiralscaffold. 3.A thiourea-catalyzed asymmetric Michael addition of activated methylene compounds to a,ß-unsaturated imides derived from 2-pyrrolidinone and 2-methoxybenzamide. 4.High enantioselectivities (up to 94 % ee) were attained in the Michael addition of a variety of a,ß -unsaturated imides (1) and malononitrile. 5.Alkylation- Primary aminothiourea derivatives catalyze enantioselective alkylation of a-arylpriopionaldehdyes with diarylbromomethane. 6.Living Ring-Opening Polymerization- A versatile, metal-free, organocatalytic approach to the living ring- opening polymerization of lactide. 7.Neber Reaction- The first enantioselective Neber reaction of ß-ketoxime sulfonates catalyzed by a bifunctional thiourea. |
