Synthesis of Piperidine Derivatives by Rhodium- Catalyzed Tandem Reaction of<i>N</i>-Sulfonyl-1,2,3-Triazole and Vinyl Ether
作者:Sisi Yu、Yuehui An、Wenlin Wang、Ze-Feng Xu、Chuan-Ying Li
DOI:10.1002/adsc.201800191
日期:2018.6.5
A chemoselective tandemreaction of 4‐acyloxymethylene‐1‐sulfonyl‐1,2,3‐triazole and vinyl ether was reported, producing polysubstituted piperidinederivatives in up to 96% yield. The key intermediate N‐sulfonyl 1‐azadiene generated by migration of the OAc group to the α‐imino rhodium carbene was isolated and a plausible mechanism was proposed. Several related ring systems were constructed from the
Synthesis of Pyrido[2,3‐
<i>b</i>
]indole Derivatives via Rhodium‐Catalyzed Cyclization of Indoles and 1‐Sulfonyl‐1,2,3‐triazoles
作者:Shengguo Duan、Yuehui An、Bing Xue、Yidian Chen、Wan Zhang、Ze‐Feng Xu、Chuan‐Ying Li
DOI:10.1002/adsc.201901599
日期:2020.4.27
Acyloxy‐substituted α,β‐unsaturated imines generated in situ from triazoles can act as aza‐[4 C] synthons and be trapped by indoles in a stepwise [4 + 2] cycloaddition reaction, thus providing rapid access to valuable pyrido[2,3‐b]indoles in high yields. Attractive features of this reaction system include operational simplicity, readily available substrates, construction of sterically demanding quaternary
由三唑原位生成的酰氧基取代的α,β-不饱和亚胺可以作为aza- [4 C]合成子,并被吲哚在逐步[4 + 2]环加成反应中捕获,从而提供了快速获取有价值的吡啶基[2, 3‐ b ]吲哚高产。该反应系统的吸引人的特征包括操作简便,易于获得的底物,空间要求严格的四元中心的构建以及使用三氟甲磺酸酯的便捷衍生作用。
[EN] TRICYCLIC PYRAZOLE KINASE INHIBITORS<br/>[FR] INHIBITEURS DE KINASES A BASE DE TYRAZOLES TRICYCLIQUES
申请人:ABBOTT LAB
公开号:WO2005095387A1
公开(公告)日:2005-10-13
Compounds of the present invention are useful for inhibiting protein tyrosine kinases. Also disclosed are methods of making the compounds, compositions containing the compounds, and methods of treatment using the compounds.
Rhodium-catalysed synthesis of fused pyrimidine derivatives employing N-sulfonyl-1,2,3-triazoles as a 1-aza-[4C] synthon
作者:Ze-Feng Xu、Yuehui An、Yidian Chen、Shengguo Duan
DOI:10.1016/j.tetlet.2019.06.023
日期:2019.7
A new synthetic application of N-sulfonyl-1,2,3-triazoles acting as a 1-aza-[4C] synthon via the 1,2-shift reaction of an α-imine rhodium carbene was developed for the synthesis of fused pyrimidine derivatives. The high reactivity of the strained three-membered 2H-azirine ring facilitated the unusual cyclization of electron-deficient dienes with electron-deficient dienophiles. The compatibility was
A new furan annelation by the palladium-catalyzed reaction of 2-alkynyl carbonates with β-keto esters is described. The reaction proceeds under mild neutral conditions and hence unstable 3-alkylidene-2,3-dihydrofurans can be prepared in this way. Similarly, reaction of 2-(1-alkynyl)oxiranes with β-keto esters gives alkylidene furans.