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ChemInform Abstract: Carbozincation of Enynes Catalyzed by Titanium(IV) Alkoxides and Alkylmagnesium Derivatives.

✍ Scribed by J.-L. MONTCHAMP; E. NEGISHI

Publisher
John Wiley and Sons
Year
2010
Weight
36 KB
Volume
29
Category
Article
ISSN
0931-7597

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✦ Synopsis

Carbozincation of Enynes Catalyzed by Titanium(IV) Alkoxides and Alkylmagnesium Derivatives.

-Novel trimetallic Zn-Ti-Mg reagent systems consisting of equimolar amounts of Et 2 Zn relative to the enyne and catalytic quantities of TiX(O-iPr) 3 (X=Cl or O-iPr) and RMgBr (R=Et or iPr) react with various enynes to produce cyclic organozinc intermediates. After protonolysis, deuteriolysis, iodinolysis, or treatment with halide (X) they provide the corresponding products. -(MONTCHAMP,

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