A Nitrogen-Assisted One-Pot Heteroaryl Ketone Synthesis from Carboxylic Acids and Heteroaryl Halides
作者:Krystyna Demkiw、Hirofumi Araki、Eric L. Elliott、Christopher L. Franklin、Yoonjoo Fukuzumi、Frederick Hicks、Kazushi Hosoi、Tadashi Hukui、Yoichiro Ishimaru、Erin O’Brien、Yoshimasa Omori、Masahiro Mineno、Hideya Mizufune、Naotaka Sawada、Yasuhiro Sawai、Lei Zhu
DOI:10.1021/acs.joc.6b00194
日期:2016.4.15
A practical and highly effective one-pot synthesis of versatile heteroaryl ketones directly from carboxylic acids and heteroaryl halides under mild conditions is reported. This method does not require derivatization of carboxylic acids (preparation of acid chlorides, Weinreb amides, etc.) or the use of any additives/catalysts. A wide substrate scope of carboxylic acids with high functional group tolerance
An NHC-Catalyzed Desulfonylative Smiles Rearrangement of Pyrrole and Indole Carboxaldehydes
作者:Caitlin Swaby、Alfie Taylor、Michael F. Greaney
DOI:10.1021/acs.joc.3c01089
日期:2023.9.1
classes for arylation under mild conditions. Here, we describe an N-heterocyclic carbene (NHC) catalysis system that accesses indole and pyrrole aldehyde substrates in a desulfonylative Smiles process. The reaction proceeds under mild, transition-metal-free conditions and captures acyl anion reactivity for the synthesis of a diverse array of 2-aroyl indoles and pyrroles from readily available sulfonamide
available Cp*Mo(II)-complexes as efficient deoxygenation catalysts that could catalyze the direct intermolecular deoxygenative coupling of carbonylcompounds with alkynes. Enabled by this powerful Cp*Mo(II)-catalyst, various valuable heteroarenes (10 different classes) were obtained in generally good yields and remarkable chemo- and regioselectivities. Mechanistic studies suggested that this reaction might
2-ACYL-INDOLDERIVATE UND DEREN VERWENDUNG ALS ANTITUMORMITTEL
申请人:Baxter Healthcare S.A.
公开号:EP1276720B1
公开(公告)日:2006-12-20
2-Aroylindoles from o-bromochalcones via Cu(<scp>i</scp>)-catalyzed S<sub>N</sub>Ar with an azide and intramolecular nitrene C–H insertion
作者:Yogesh Goriya、Chepuri V. Ramana
DOI:10.1039/c4cc02501f
日期:——
A simple procedure for the synthesis of 2-aroylindole derivatives comprising a one-pot CuI-catalyzed SNAr reaction of o-bromochalcones with sodium azide and subsequent intramolecular cyclization through nitrene C-H insertion has been developed. This protocol is also applicable with the 2'-bromocinnamates giving the indole-2-carboxylates.