I2-promoted direct one-pot synthesis of 2,2-bisindolyl-1-arylethanones from multiform substrates arylethenes, 2-hydroxy-aromatic ketones, and carbinols
摘要:
An I-2-promoted domino protocol was developed to construct 2,2-bisindolyl-1-arylethanones from multiform substrates arylethenes, 2-hydroxy-aromatic ketones, and carbinols via three distinct pathways. Through a logical coupled oxidation/Friedel-Crafts alkylation domino process, a variety of 2,2-bisindolyl-1-arylethanones were synthesized in one-pot. (C) 2013 Elsevier Ltd. All rights reserved.
A molecular I-2-promoted sp(3) C-H bond dual-(het)arylation protocol was developed for the synthesis of 2,2-bisindolyl-1-arylethanones. Through a logical design, three mechanism-different reactions (iodination, Kornblum oxidation, and Friedel Crafts reaction) were assembled in a single reactor. A variety of 2,2-bisindolyl-1-aryl ethanones were synthesized from simple and readily available aryl methyl ketones and indoles. In the reaction, metal, base, and ligand were all avoidable.
Cu(OTf)<sub>2</sub>/HFIP catalyzed regioselective cycloisomerization of indole-C3-functionalized alkynols to carbazoles
We report here a simple and atom economic cycloisomerization reaction of indole-tethered alkynols for constructing diverse carbazoles via 1,2-alkly migration using Cu(OTf)2/HFIP as the excellent promoter system.
I2-promoted direct one-pot synthesis of 2,2-bisindolyl-1-arylethanones from multiform substrates arylethenes, 2-hydroxy-aromatic ketones, and carbinols
An I-2-promoted domino protocol was developed to construct 2,2-bisindolyl-1-arylethanones from multiform substrates arylethenes, 2-hydroxy-aromatic ketones, and carbinols via three distinct pathways. Through a logical coupled oxidation/Friedel-Crafts alkylation domino process, a variety of 2,2-bisindolyl-1-arylethanones were synthesized in one-pot. (C) 2013 Elsevier Ltd. All rights reserved.
Oxidative Cleavage of C<sub>sp<sup>3</sup></sub>–C<sub>sp<sup>2</sup></sub> and C<sub>sp<sup>3</sup></sub>–H Bonds with KO<sup><i>t</i></sup>Bu: Highly Robust and Practical Synthesis of Diaryl/(het-Ar) Ketones
作者:Srinivasarao Yaragorla、Tabassum Khan、Ahalya Behera
DOI:10.1021/acs.joc.2c02519
日期:2023.2.17
report an efficient and practical approach for synthesizing diaryl(het) ketones from R–CO–CHR–Ar through a simultaneous oxidativecleavage of C–C and C–H bonds using KOtBu. This method enables synthesizing a variety of unsymmetrical and symmetrical (hetero)aryl ketones in excellent yields, which are otherwise difficult to make. Besides, we synthesized natural products using this method.
在此,我们报告了一种通过使用 KO t Bu 同时氧化裂解 C-C 和 C-H 键从 R-CO-CHR-Ar 合成二芳基(杂)酮的有效且实用的方法。这种方法能够以优异的收率合成各种不对称和对称(杂)芳基酮,否则很难制备。此外,我们用这种方法合成了天然产物。