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ChemInform Abstract: Diastereoselective Synthesis of Cyclopropyl Boronic Esters.

โœ Scribed by J. PIETRUSZKA; M. WIDENMEYER

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

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โœฆ Synopsis

Diastereoselective Synthesis of Cyclopropyl Boronic Esters.

-A simple and efficient protocol for the conversion of 1-alkynes to 2-alkylcyclopropanols is described. Thus, 1-alkyne-derived alkynyl boronic esters (I) are converted to chiral tartrates (IV) and then subjected to cyclopropanation providing esters (V) with moderate diastereoselectivity. Oxidative cleavage affords the cyclopropanols.

-(PIETRUSZKA,

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