Arylation and Heteroarylation of Thienylsulfonamides with Organotrifluoroborates
作者:Mnaza Noreen、Nasir Rasool、Mirna El Khatib、Gary A. Molander
DOI:10.1021/jo501323z
日期:2014.8.1
the Suzuki cross-coupling of unprotected thienylsulfonamides from air- and bench-stable organotrifluoroborates in the absence of a protecting group on the sulfonamide nitrogen. The developed synthetic method can be applied to the preparation of various arylated and heteroarylated thienylsulfonamides underconditions that are tolerant of a broad range of functional groups.
Wittig reaction of formyl-substituted organotrifluoroborates and stabilized phosphonium ylides in an aqueous medium
作者:Gary A. Molander、Roberta A. Oliveira
DOI:10.1016/j.tetlet.2007.11.205
日期:2008.2
The synthesis of unsaturated organotrifluoroborates using the Wittig alkenation is described. These transformations to disubstituted alkenes were achieved by using formyl-substituted organotrifluoroborates and stabilized ylides using water as a solvent. The products were isolated in moderate to excellent yields and the reaction gave preferentially the E-isomer. (c) 2007 Published by Elsevier Ltd.
Oxidative Condensations To Form Benzimidazole-Substituted Potassium Organotrifluoroborates
作者:Gary A. Molander、Kehinde Ajayi
DOI:10.1021/ol301956p
日期:2012.8.17
benzimidazole-substituted potassium organotrifluoroborates was prepared via the condensation of various potassium formyl-substituted aryl- and heteroaryltrifluoroborates with aromatic 1,2-diamines under oxidative conditions. The efficient Suzuki–Miyaura cross-coupling of products thus formed to various aryl and heteroaryl bromides was achieved in good yields. The method allows the facile preparation of benzimidazole-containing
Condensation Reactions To Form Oxazoline-Substituted Potassium Organotrifluoroborates
作者:Gary A. Molander、Wilma Febo-Ayala、Ludivine Jean-Gérard
DOI:10.1021/ol901395c
日期:2009.9.3
oxazoline-substituted potassium organotrifluoroborates was prepared via the condensation of various potassium formyl-substituted aryl- and heteroaryltrifluoroborates with tosylmethyl isocyanide under basic conditions. The efficient Suzuki−Miyaura cross-coupling of products thus formed to various aryl bromides was achieved in good yields. The method allows the facile preparation of oxazole-containing