Induced halogenation of alkyl cyclohexenyl ketones involving metal halides, hydrohalogenic acids, and hydrogen peroxide
摘要:
The induced halogenation and hydroxyhalogenation of alkyl cyclohexenyl ketones in a system [MHlg + HHlg or HHlg]-H(2)O(2) or in NaOCl was performed and optimum reaction conditions were established. Under mild conditions the electrophilic addition of the halogen or the acid occurred at the multiple bond of the ring with the formation of the corresponding dihalo or hydroxyhalo derivatives of cycloaliphatic ketones. From the compounds obtained epoxy- and dioxyketones of aliphatic series were prepared. Chloro(bromo)hydrins of ketones from the alkylcyclohexane series and oxiranes based thereon are reactive compounds and can be employed as synthons in the organic synthesis.
[EN] HETEROARYL COMPOUNDS AND USES THEREOF<br/>[FR] COMPOSÉS HÉTÉROARYLE ET UTILISATIONS ASSOCIÉES
申请人:CELGENE AVILOMICS RES INC
公开号:WO2014144737A1
公开(公告)日:2014-09-18
The present invention relates to compounds useful as inhibitors of protein kinases, containing a cysteine residue in the ATP binding site. The invention further provides for pharmaceutically acceptable compositions comprising therapeutically effective amounts of one or more of the protein kinase inhibitor compounds and methods of using said compositions in the treatment of cancers and carcinomas.
The assignments of the proton and carbon signals and conformations of substituted 2‐aryl‐trans‐decahydroquinolin‐4‐ones were determined using a combination of 1H, 13C, COSY and HETCOR spectral data. Analysis of the spectral data reveals that these compounds exist predominantly in twin‐chair conformations with the aryl and alkyl substituents in the equatorial orientation. Introduction of an alkyl group
A Novel Synthesis of Methylenecyclopropane Spiro-Linked with Cycloalkanes via a Cyclization of Allylic Epoxides and Its Application to a Synthesis of Fused 3-Methylfurans
作者:Tsuyoshi Satoh、Yasushi Kawase、Koji Yamakawa
DOI:10.1246/bcsj.64.1129
日期:1991.4
Ring closure of allylicepoxides derived from 1-chloroalkyl phenyl sulfoxides and cyclic ketones with lithium diisopropylamide (LDA) in 3-Exo-Tet mode gave spiro-linked methylenecyclopropanes having a hydroxyl group in good yields. Oxidation of these compounds gave ketones, which were then treated with p-toluenesulfonic acid in 1,4-dioxane or DMSO at 100°C to give fused 3-methylfurans in good overall
Iron Catalyzed Highly Enantioselective Epoxidation of Cyclic Aliphatic Enones with Aqueous H<sub>2</sub>O<sub>2</sub>
作者:Olaf Cussó、Marco Cianfanelli、Xavi Ribas、Robertus J. M. Klein Gebbink、Miquel Costas
DOI:10.1021/jacs.5b12681
日期:2016.3.2
An iron complex with a C1-symmetric tetradentate N-based ligand catalyzes the asymmetric epoxidation of cyclic enones and cyclohexene ketones with aqueous hydrogen peroxide, providing the corresponding epoxides in good to excellent yields and enantioselectivities (up to 99% yield, and 95% ee), under mild conditions and in short reaction times. Evidence is provided that reactions involve an electrophilic
具有 C1 对称四齿 N 基配体的铁配合物催化环烯酮和环己烯酮与过氧化氢水溶液的不对称环氧化反应,提供相应的环氧化物,产率和对映选择性都很好(高达 99% 和 95% ee ),条件温和,反应时间短。有证据表明反应涉及亲电氧化剂,并且该元素用于对包含两个烯烃位点的烯酮进行位点选择性环氧化。