One-pot synthesis of telluroketene acetals and haloketene acetals using sp(2) geminated hetero organobismetallic intermediates
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Elsevier B.V.
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A novel one-pot synthesis of 1,1-dihalo-1-alkenes and 1,1-bis(butyltelluro)-1-alkenes was developed from hydrozirconation of alkynylzinc bromide with Cp2Zr(H)Cl and subsequent capture of the Zn/Zr 1,1-heterodimetallo-1-alkene intermediates with halogen and tellurium electrophiles. These protocols, which include multiple reactions in a one-pot procedure, allow the preparation of the potentially useful haloketene acetals and telluroketene acetals from terminal alkynes, under mild conditions and in a good yield. (C) 2012 Elsevier Ltd. All rights reserved.
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Zn/Zr sp(2) organobismetallic, Telluroketene acetals, Haloketene acetals, One-pot
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Tetrahedron Letters. Oxford: Pergamon-elsevier Science Ltd, v. 53, n. 13, p. 1582-1586, 2012.
