N-磺酰基和N-氨磺酰基叠氮化物与末端炔烃的环加成通常通过烯酮亚胺中间体产生酰胺衍生物。我们在此描述了一种使用脯氨酰胺配体的Cu( I ) 催化方法,该方法通过抑制 5-铜三唑中间体的N 1 -N 2键的裂解,在水介质中选择性生成 N -磺酰基和氨磺酰三唑。本方法温和且耐空气、湿气和多种官能团,从而可以轻松获得各种三唑产品。
Synthesis of 3-Pyrrolin-2-ones by Rhodium-Catalyzed Transannulation of 1-Sulfonyl-1,2,3-triazole with Ketene Silyl Acetal
作者:Rui-Qiao Ran、Jun He、Shi-Dong Xiu、Kai-Bing Wang、Chuan-Ying Li
DOI:10.1021/ol501514b
日期:2014.7.18
α-Imino rhodium carbenoids generated from 1-sulfonyl 1,2,3-triazole were applied to the 3 + 2 cycloaddition with ketene silyl acetal, offering a novel and straightforward synthesis of biologically interesting compound 3-pyrrolin-2-one with broad substrate scope.
Synthesis of Multifunctionalized 2-Carbonylpyrrole by Rhodium-Catalyzed Transannulation of 1-Sulfonyl-1,2,3-triazole with β-Diketone
作者:Wanli Cheng、Yanhua Tang、Ze-Feng Xu、Chuan-Ying Li
DOI:10.1021/acs.orglett.6b03179
日期:2016.12.2
A facile rhodium-catalyzed transannulation of 1-sulfonyl-1,2,3-triazoles with β-diketones was realized, and a series of multisubstituted 2-carbonylpyrroles were synthesized efficiently (up to 94% yield). The protocol features several advantages, such as readily available materials, mild reaction conditions, a concise operating procedure, a broad reaction scope, and excellent regioselectivity when benzoylacetone
Deoxygenative C2-heteroarylation of quinoline <i>N</i>-oxides: facile access to α-triazolylquinolines
作者:Geetanjali S Sontakke、Rahul K Shukla、Chandra M R Volla
DOI:10.3762/bjoc.17.42
日期:——
A metal- and additive-free, highly efficient, step-economical deoxygenative C2-heteroarylation of quinolines and isoquinolines was achieved from readily available N-oxides and N-sulfonyl-1,2,3-triazoles. A variety of α-triazolylquinoline derivatives were synthesized with good regioselectivity and in excellent yields under mild reaction conditions. Further, a gram-scale and one-pot synthesis illustrated
Sequential Functionalization of the OH and C(<i>sp</i><sup>2</sup>)O Bonds of Tropolones by Alkynes and<i>N</i>-Sulfonyl Azides
作者:Boram Seo、Woo Hyung Jeon、Chul-Eui Kim、Sanghyuck Kim、Sung Hong Kim、Phil Ho Lee
DOI:10.1002/adsc.201500829
日期:2016.3.31
Sequentialcopper‐catalyzed [3+2] cycloaddition, rhodium‐catalyzed OH insertion, intramolecular 1,8‐addition, and rearrangement starting from 1‐alkynes, N‐sulfonyl azides, and tropolones is demonstrated for the synthesis of the 2‐functionalized aminotropones in one pot. These results indicate that sequential functionalization of OH and C(sp2)O bonds smoothly occurs in the C(sp2)OH bonds of tropolone
Rh(II) Catalyzed High Order Cycloadditions of 8-Azaheptafulvenes with <i>N</i>-Sulfonyl 1,2,3-Triazloes or α-Oxo Diazocompounds
作者:Wei Chen、Ya-Li Bai、Yong-Chun Luo、Peng-Fei Xu
DOI:10.1021/acs.orglett.6b03542
日期:2017.1.20
A novel strategy was developed for the application of Rh carbenes generated from readily accessible N-sulfonyl 1,2,3,-triazoles or diazocompouds in the high order cycloadditions, which offered an efficient route to a variety of N-containing medium-sized rings. The process provided a wide range of cyclohepta[b]pyrazine and cyclohepta[b]pyrrolone derivatives with high yields.
已开发出一种新的策略,用于将由易于获得的N-磺酰基1,2,3,-三唑或重氮化合物生成的Rh卡宾化合物以高阶环加成的形式应用,这为连接各种含N的中型环提供了一条有效途径。该方法以高收率提供了多种环庚[ b ]吡嗪和环庚[ b ]吡咯烷酮衍生物。