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: Diastereodifferentiation in Intramolecular Cyclopropanations of Chiral Secondary Allylic Diazoacetates.
β Scribed by S. F. MARTIN; M. C. HILLIER
- Publisher
- John Wiley and Sons
- Year
- 2010
- Weight
- 36 KB
- Volume
- 29
- Category
- Article
- ISSN
- 0931-7597
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β¦ Synopsis
The diastereomeric ratios of the intramolecular metal-catalyzed cyclopropanations of diastereomeric, secondary allylic diazoacetates such as (I) and (V) varies with the catalyst and the stereochemistry of the starting material. -(MARTIN,
π SIMILAR VOLUMES
Comparative Evaluation of Enantiocontrol for Intramolecular Cyclopropanation of Diazoacetates with Chiral Cu(I), Rh(II), and Ru(II) Catalysts. -Complementarity in enantiocontrol between the title catalysts is demonstrated. Each of these catalytic systems has unique capabilities for enantio-selection
The individual enantiomers of substituted cyclohexyl diazoacetates (I)-(IV) or 2-octyl diazoacetates (V) matched with a configurationally suitable chiral dirhodium(II) carboxamidate catalyst provide an effective methodology for the synthesis of lactones with exceptional diastereoand regiocontrol. Th
## Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a βFull Textβ option. The original article is trackable v