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ChemInform Abstract: Platinum-Catalyzed Cyclopropanation of Olefins with Ethyl Diazoacetate.

โœ Scribed by S. BOVERIE; F. SIMAL; A. DEMONCEAU; A. F. NOELS; I. L. EREMENKO; A. A. SIDOROV; S. E. NEFEDOV


Publisher
John Wiley and Sons
Year
2010
Weight
32 KB
Volume
29
Category
Article
ISSN
0931-7597

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Asymmetric Cyclopropanation of Olefins with Diazoacetate Using Chiral Copper Catalysts. -Chiral 2-(2-sulfonylamino)phenyl-oxazolines and especially the oxazoline shown in A) are found to be efficient ligands for Cucatalyzed enantioselective cyclopropanation of olefins. The substitution pattern of th

ChemInform Abstract: Reactions of Ethyl
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Reactions of Ethyl Diazoacetate with Thioketones. -The 1,3-dipolar cycloaddition of ethyl diazoacetate (II) with thioketones is investigated. The most reactive dipolarophiles (I) give 1,3-dithiolanes, e.g. (III), (V), (VI) and (VIII). Sterically crowded thioketones (IX) and (XII) as well as the less