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Homologation of Boronic Esters with (Dialkoxymethyl)lithiums. Asymmetric Synthesis of α-Alkoxy Boronic Esters †

✍ Scribed by Carmès, Laurence; Carreaux, François; Carboni, Bertrand

Book ID
127310930
Publisher
American Chemical Society
Year
2000
Tongue
English
Weight
168 KB
Volume
65
Category
Article
ISSN
0022-3263

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## Reaction of pinanediol boronates with ( I ,I -dichlo-roethy1)lithium generated in situ at -78°C followed by reawangemenf o f the resulting borate complex 2 s in the presence of zinc chloride at 25°C has resulted in chirally biased insertion of the I -chloroethyl group into the carbon-boron bond