Iridium(III)-Catalyzed Direct C-7 Amination of Indolines with Organic Azides
作者:Kwangmin Shin、Sukbok Chang
DOI:10.1021/jo5018475
日期:2014.12.19
Iridium-catalyzed regioselective C-7 amination of indolines has been achieved with organic azides as a facile nitrogen source. The developed procedure is convenient to perform even at roomtemperature and applicable to a wide range of substrates with high catalytic activity. Various types of organic azides (sulfonyl, aryl, and alkyl derivatives) were all successfully reacted under the present conditions
A ruthenium‐catalyzed direct C7 amidation of indoline CHbonds with sulfonyl azides was developed. This procedure allows the synthesis of a variety of 7‐amino‐substituted indolines, which are useful in pharmaceutical. The good functional tolerances, as well as the mild conditions, are prominent feature of this method.
irradiation in the presence of catalytic amounts of [(DPEphos)(bcp)Cu]PF6 and an amine, a range of unactivated aryl and alkyl halides were shown to be smoothly activated through a rare Cu(I)/Cu(I)*/Cu(0) catalytic cycle. This complex efficiently catalyzes a series of radical processes, including reductions, cyclizations, and direct arylation of arenes.
Let the sunshine in! Unactivated alkyl and aryl bromides underwent a light‐enabled reductive radical cyclization in the presence of a dimeric phosphine–gold complex as a photocatalyst (see scheme; X=C(CO2Et)2, NR, O). Sunlight can be used as the energy source for this simple and efficient radical reaction, which does not require potentially hazardous and toxic chemical reagents, such as organostannanes
让阳光照进来!未活化的烷基和芳基溴化物在二聚膦-金络合物作为光催化剂的情况下进行了光活化的还原性自由基环化反应(见方案; X = C(CO 2 Et)2,NR,O)。阳光可以用作此简单有效的自由基反应的能源,该自由基反应不需要潜在危险和有毒的化学试剂,例如有机锡和化学引发剂。
Ir<sup>III</sup>-Catalyzed Direct C-7 Amidation of Indolines with Sulfonyl, Acyl, and Aryl Azides at Room Temperature
作者:Wei Hou、Yaxi Yang、Wen Ai、Yunxiang Wu、Xuan Wang、Bing Zhou、Yuanchao Li
DOI:10.1002/ejoc.201403355
日期:2015.1
procedure for an IrIII-catalyzedC-7 selective C–H amidation and amination of indolines is reported. The reaction exhibits good functional group tolerance, requires no external oxidants, and releases N2 as the single byproduct, thus providing an environmentally benign, readily scalable method for the synthesis of 7-aminoindolines. More importantly, acyl, sulfonyl, and arylazides can be employed as