Structural effects in solvolytic reactions. 17. Solvolysis of 1-aryl-1-cyclopropyl-1-ethyl p-nitrobenzoates. Major increases in electron supply by the cyclopropyl group with increasing electron demand at the cationic center. Effect of substituents on the cyclopropane ring
SUBSTITUTED 7-SULFANYLMETHYL-, 7-SULFINYLMETHYL- AND 7-SULFONYLMETHYLINDOLES AND THE USE THEREOF
申请人:Kolkhof Peter
公开号:US20100105744A1
公开(公告)日:2010-04-29
The present application relates to novel 7-sulfanylmethyl-, 7-sulfinylmethyl- and 7-sulfonylmethylindole derivatives, processes for the preparation thereof, the use thereof alone or in combinations for the treatment and/or prevention of diseases, and the use thereof for the manufacture of medicaments for the treatment and/or prevention of diseases, especially for the treatment and/or prevention of cardiovascular disorders.
Substituted 7-sulfanylmethyl-, 7-sulfinylmethyl- and 7-sulfonylmethylindoles and the use thereof
申请人:Bayer Schering Pharma Aktiengesellschaft
公开号:US08063234B2
公开(公告)日:2011-11-22
The present application relates to novel 7-sulfanylmethyl-, 7-sulfinylmethyl- and 7-sulfonylmethylindole derivatives, processes for the preparation thereof, the use thereof alone or in combinations for the treatment and/or prevention of diseases, and the use thereof for the manufacture of medicaments for the treatment and/or prevention of diseases, especially for the treatment and/or prevention of cardiovascular disorders.
Ca(NTf
<sub>2</sub>
)
<sub>2</sub>
/HFIP‐Mediated Direct and Mild Rearrangement of Cyclopropyl Carbinols to
<i>E</i>
‐Homoallylic Triflimides
作者:Min Wu、Zhiqiang Duan、Qingmei Liu、Hui Gao、Zhi Zhou、Wei Yi、Shengdong Wang
DOI:10.1002/ejoc.202200813
日期:2022.9.27
A novel, general and straightforward Ca(NTf2)2/HFIP-mediated rearrangement of cyclopropyl carbinols for the construction of E-homoallylic triflimides has been developed. In this protocol, Ca(NTf2)2 was used as both the OH activator and the triflimide anion source. This transformation takes place under mild conditions and shows an impressive substrate and functional group tolerance.
Cyclopropylmethyl sulfides react with N-fluorosulfonimide (NFSI) or molecular iodine, enabling C−S cleavage to generate cyclopropylcarbinyl cations, which evolve through cyclopropanering-openingreactions into homoallyl cations suitable to react with nucleophiles present in the reaction media. This desulfurative cleavage of cyclopropylmethyl thioethers under non-acidic conditions facilitates homoallylation
环丙基甲基硫醚与 N-氟磺酰亚胺 (NFSI) 或分子碘反应,使 C−S 裂解生成环丙基羰基阳离子,该阳离子通过环丙烷开环反应演变成适合与反应介质中存在的亲核试剂反应的高烯丙基阳离子。这种环丙基甲基硫醚在非酸性条件下的脱硫裂解促进了基于 N 的亲核试剂(例如烷基或芳基胺以及磺酰亚胺)的同烯丙基化,根据亲核试剂的不同,可通过一锅法一步或两步进行。
SUBSTITUIERTE 7-SULFANYLMETHYL-, 7-SULFINYLMETHYL- UND 7-SULFONYLMETHYL-INDOLE UND IHRE VERWENDUNG