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2005 Organo-boron compounds S 0040 Unprecedented Use of Silver(I) N-Heterocyclic Carbene Complexes for the Cata- lytic Preparation of 1,2-Bis(boronate) Esters. — The silver-catalyzed diboration of alkenes (I) with diborane (II) leads selectively to 1,2-bis(boronate) esters (III), that can be easily oxidized to corresponding diols (IV). No asymmetric induction on the reaction products is observed despite the use of the chiral catalyst. — (RAMIREZ, J.; CORBERAN, R.; SANAU, M.; PERIS*, E.; FERNANDEZ, E.; Chem. Commun. (Cambridge) 2005, 24, 3056-3058; Dep. Quim. Inorg. Org., Univ. Jaume I, E-12080 Castellon, Spain; Eng.) — R. Staver 43- 188

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Page 1: Unprecedented Use of Silver(I) N-Heterocyclic Carbene Complexes for the Catalytic Preparation of 1,2-Bis(boronate) Esters

2005

Organo-boron compoundsS 0040 Unprecedented Use of Silver(I) N-Heterocyclic Carbene Complexes for the Cata-

lytic Preparation of 1,2-Bis(boronate) Esters. — The silver-catalyzed diboration of alkenes (I) with diborane (II) leads selectively to 1,2-bis(boronate) esters (III), that can be easily oxidized to corresponding diols (IV). No asymmetric induction on the reaction products is observed despite the use of the chiral catalyst. — (RAMIREZ, J.; CORBERAN, R.; SANAU, M.; PERIS*, E.; FERNANDEZ, E.; Chem. Commun. (Cambridge) 2005, 24, 3056-3058; Dep. Quim. Inorg. Org., Univ. Jaume I, E-12080 Castellon, Spain; Eng.) — R. Staver

43- 188

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