Glass-catalyzed conversion of boronic esters of asymmetric diols to diol sulfites and amine complexes of boron halides

DS Matteson, WC Hiscox, L Fabry-Asztalos…

Index: Man, Hon-Wah; Hiscox, William C.; Matteson, Donald S. Organic Letters, 1999 , vol. 1, # 3 p. 379 - 381

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Citation Number: 10

Abstract

Sterically hindered boronic esters of (R,R)-1,2-dicyclohexyl-1,2-ethanediol or pinanediol react with thionyl chloride and excess imidazole in acetonitrile on a borosilicate glass surface (but not on silica or soda-lime glass) to form the corresponding cyclic sulfite of the diol and the easily

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