Syntheses, Structures, and Reactivity of 2,5-Diboryl-1-alkylpyrroles and Di(1-alkyl-2-pyrrolyl)boranes

• Published in: European journal of inorganic chemistry Vol. 1999; no. 3; pp. 399 - 404
• Main Authors: Faderl, Jürgen, Deobald, Bernd, Guilard, Roger, Pritzkow, Hans, Siebert, Walter
• Format: Journal Article
• Language: English
• Published: Weinheim WILEY-VCH Verlag GmbH 01.03.1999; WILEY‐VCH Verlag GmbH; Wiley
• Subjects: 1-Alkylpyrroles; Boranes; Chemistry; Chemistry, Inorganic & Nuclear; Lithiation; Physical Sciences; Porphyrinogenes; Science & Technology; Tin-boron exchange; DICATION; PORPHYRIN; DERIVATIVES; THIOPHENE; SILICON-BRIDGED MACROCYCLES

Reactions of 2,5‐dilithiated 1‐methylpyrrole (1a) with ClB(NR2)2 lead to the novel 2,5‐diboryl‐1‐methylpyrroles 2a and 2b. Accordingly, 2,5‐diboryl‐1‐benzylpyrrole 2d is obtained. 1a and Cl2BNiPr2 form the aminochloroboryl‐substituted derivative 2c and the di(5‐boryl‐2‐pyrrolyl)borane 4 in 29% and 1...