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ChemInform Abstract: Comparative Evaluation of Enantiocontrol for Intramolecular Cyclopropanation of Diazoacetates with Chiral Cu(I), Rh(II), and Ru(II) Catalysts.

✍ Scribed by M. P. DOYLE; C. S. PETERSON; Q.-L. ZHOU; H. NISHIYAMA

Publisher
John Wiley and Sons
Year
2010
Weight
35 KB
Volume
28
Category
Article
ISSN
0931-7597

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✦ Synopsis

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, independent of whether their ligands are C2-symmetric or if they have a cis-array of chiral attachments. A further comparative measure of selectivity in cyclopropanation reactions is regioselection, particularly with (V) which undergoes either Ξ³-lactone formation or macrocyclization.

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