Gold- and Silver-Catalyzed Tandem Amination/Ring Expansion of Cyclopropyl Methanols with Sulfonamides as an Expedient Route to Pyrrolidines
作者:Weidong Rao、Philip Wai Hong Chan
DOI:10.1002/chem.200801242
日期:2008.11.17
An efficient syntheticroute to pyrrolidines that relies on AuCl/AgOTf-catalyzed tandem amination/ringexpansion of substituted cyclopropyl methanols with sulfonamides is reported herein. The reactions proceed rapidly at 100 degrees C with catalyst loadings as low as 2 mol % and produce the pyrrolidine products in yields of 30-95 %. The method was shown to be applicable to a broad range of cyclopropyl
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.
6-ALKYL DIHYDROPYRAZOLOPYRIMIDINONE COMPOUNDS AS PDE2 INHIBITORS
申请人:Merck Sharp & Dohme Corp.
公开号:EP3302484B1
公开(公告)日:2020-09-16
PYRAZOLE COMPOUNDS AS BTK INHIBITORS
申请人:Boehringer Ingelheim International GmbH
公开号:US20160340339A1
公开(公告)日:2016-11-24
The present invention encompasses compounds of the formula (I) wherein the groups R
1
, Cy, and Y are defined herein, which are suitable for the treatment of diseases related to BTK, process of making, pharmaceutical preparations which contain compounds and their methods of use.