[EN] 2-AZA-BICYCLO[2.2.1]HEPTANE DERIVATIVES<br/>[FR] DÉRIVÉS DE 2-AZA-BICYCLO[2.2.1]HEPTANE
申请人:ACTELION PHARMACEUTICALS LTD
公开号:WO2009104155A1
公开(公告)日:2009-08-27
The invention relates to novel 2-aza-bicyclo[2.2.1]heptane derivatives of formula (I), wherein A, B, n and R1 are as described in the description, and to the use of such compounds, or of pharmaceutically acceptable salts of such compounds, as medicaments, especially as orexin receptor antagonists.
Palladium-Catalyzed Indole, Pyrrole, and Furan Arylation by Aryl Chlorides
作者:Enrico T. Nadres、Anna Lazareva、Olafs Daugulis
DOI:10.1021/jo1018969
日期:2011.1.21
The palladium-catalyzed directarylation of indoles, pyrroles, and furans by aryl chlorides has been demonstrated. The method employs a palladium acetate catalyst, 2-(dicyclohexylphosphino)-biphenyl ligand, and an inorganic base. Electron-rich and electron-poor aryl chlorides as well as chloropyridine couplingpartners can be used, and arylated heterocycles are obtained in moderate to good yields.
palladium‐catalyzed enantioselectiveCHfunctionalization of indoles was achieved with an axiallychiral2,2′‐bipyridine ligand, thus providing the desired indol‐3‐acetate derivatives with up to 98 % ee. Moreover, the reaction protocol was also effective for asymmetric OH insertion reaction of phenols using α‐aryl‐α‐diazoacetates. This represents the first successful application of bipyridine ligands with axial
轴向手性的2,2'-联吡啶配体实现了钯催化对映体的C C H的对映选择性CH官能化,从而提供了所需的吲哚-3-乙酸酯衍生物,其ee高达98%。此外,该反应方案对于使用α-芳基-α-重氮乙酸酯的酚的不对称OH插入反应也有效。这代表具有轴向手性的联吡啶配体在钯催化的卡宾迁移插入反应中的首次成功应用。
Ring-Opening Diarylation of Siloxydifluorocyclopropanes by Ag(I) Catalysis: Stereoselective Construction of 2-Fluoroallylic Scaffold
作者:Xiaoning Song、Cong Xu、Dongxu Du、Ziming Zhao、Dongsheng Zhu、Mang Wang
DOI:10.1021/acs.orglett.7b03254
日期:2017.12.15
A silver-catalyzed, defluorination ring-opening diarylation of siloxy 2,2-difluorocyclopropanes, with two arenes, to directly prepare polysubstituted 2-fluoroallylic compounds, is described. This multicomponent reaction proceeds smoothly in good stereoselectivity, which is due to a chelation-controlled addition of arenes to α-fluorinated ketone intermediate.
d chromophore (DPZ) photocatalyst, aerobic photooxygenation of indoles could produce either isatins or formylformanilides in satisfactory yields by judiciously selecting inorganic salts or modulating the reaction pH. The current chemodivergent method is also effective with 2-substitutedindoles, opening straightforward synthetic routes to valuable 2,2-disubstituted 3-oxindoles, formylformanilide derivatives