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Syntheses, Structures, and Reactivity of 2,5-Diboryl-1-alkylpyrroles and Di(1-alkyl-2-pyrrolyl)boranes by Jürgen Faderl; Bernd Deobald; Roger Guilard; Hans Pritzkow; Walter Siebert is a Chemistry article available to read on EtoBox.

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Reactions of 2,5-dilithiated 1-methylpyrrole (1a) with the aryloxy-boryl derivative 2e. Reacting monolithiated 1methyl-and 1-benzylpyrroles with Cl 2 BNiPr 2 yields the di(2-ClB(NR 2 ) 2 lead to the novel 2,5-diboryl-1-methylpyrroles 2a and 2b. Accordingly, 2,5-diboryl-1-benzylpyrrole 2d is pyrrolyl)boranes 3e and 3f, respectively. NMR and MS data are in agreement with the compositions of the compounds, obtained. 1a and Cl 2 BNiPr 2 form the aminochloroborylsubstituted derivative 2c and the di(5-boryl-2-which are confirmed by X-ray structure analyses for 2a, 2b, 2d, und 3e. pyrrolyl)borane 4 in 29% and 15% yield, respectively. The 2,5-distannyl-1-methylpyrrole 1c is used for the synthesis of is reduced to the dianion E. As a first example of a tetra- [a] Anorganisch-

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Author

Jürgen Faderl; Bernd Deobald; Roger Guilard; Hans Pritzkow; Walter Siebert

Publisher

John Wiley and Sons; Wiley (John Wiley & Sons); John Wiley & Sons Ltd.; Wiley (ISSN 1434-1948)

Published

1999

Language

EN

Field

Chemistry (Physical Sciences)