[EN] HETEROARYL COMPOUNDS AS MUSCARINIC M1 RECEPTOR POSITIVE ALLOSTERIC MODULATORS [FR] COMPOSÉS HÉTÉROARYLE UTILISÉS EN TANT QUE MODULATEURS ALLOSTÉRIQUES POSITIFS DU RÉCEPTEUR MUSCARINIQUE M1
An efficient RhII -catalyzed synthesis of functionalized α-vinyl aldehydes with high E/Z stereoselectivity was developed. The reaction mediates the cyclopropanation of enaminones with vinyl carbenoids that are generated from cyclopropenes in situ to give the aminocyclopropane intermediates. Selective C-C bond cleavage of the cyclopropane intermediates leads to formation of α-vinyl aldehyde derivatives
[EN] 2,4,6-TRIALKOXYSTRYL ARYL SULFONES, SULFONAMIDES AND CARBOXAMIDES, AND METHODS OF PREPARATION AND USE<br/>[FR] 2,4,6-TRIALCOXYSTYRYLARYLSULFONES, SULFONAMIDES ET CARBOXAMIDES, ET PROCÉDÉS DE PRÉPARATION ET D'UTILISATION
申请人:TEMPLE UNIV - OF THE COMMONWEALTH SYSTEM OF HIGHER EDUCATION
公开号:WO2017023912A1
公开(公告)日:2017-02-09
Compounds according to Formula (I) are provided and salts thereof, wherein R1, R2, R3, R4, R5, R6, R13, A, X and Y are as defined herein. Methods for preparing compounds of Formula (I) are also provided, as well as methods of treating cellular proliferative disorders, such as cancer, using compounds of Formula (I).
Three-component reaction for the C2-functionalization of 1-substituted imidazoles with acetylenic ketones and isocyanates
作者:Yang Shen、Shuying Cai、Chi He、Xufeng Lin、Ping Lu、Yanguang Wang
DOI:10.1016/j.tet.2011.08.069
日期:2011.10
An efficient method for the direct C2-amidation of 1-substitutedimidazoles with acetylenic ketones and isocyanates is reported. This three-component procedure has the advantages of catalyst-free, operational simplicity, mild reaction conditions, and good to excellent yields.
Enantioselective [3 + 2] annulation of 4-isothiocyanato pyrazolones and alkynyl ketones under organocatalysis
作者:Wenyao Wang、Shiqiang Wei、Xiaoze Bao、Shah Nawaz、Jingping Qu、Baomin Wang
DOI:10.1039/d0ob02423f
日期:——
4-isothiocyanato pyrazolones with alkynylketones in the presence of an organic catalyst derived from a cinchona alkaloid under mild conditions is realized. This protocol provides unprecedented expeditious access to a wide range of optically active spiro[pyrroline–pyrazolones] with various electronic properties in high yields with good to excellent enantioselectivities.
Oxidation of Propargylic Alcohols with a 2-Quinoxalinol Salen Copper(II) Complex and<i>tert</i>-Butyl Hydroperoxide
作者:Kushan C. Weerasiri、Anne E. V. Gorden
DOI:10.1002/ejoc.201201394
日期:2013.3
selective oxidation of propargylic alcohols to yield the corresponding α,β-acetylenic carbonyl compounds when used in combination with the oxidant tert-butyl hydroperoxide (TBHP). Excellent yields (up to 99 %) are achieved for a variety of propargylic alcohols within 1 h of reaction time. The (salqu)copper(II) complex with TBHP can be used with propargylic alcohols that contain alkyl groups in the α-position
当与氧化剂叔丁基氢过氧化物 (TBHP) 结合使用时,2-喹喔啉醇 (salqu) 的铜 (II) 配合物是一种有效的催化剂,可用于选择性氧化炔丙醇以产生相应的 α,β-炔羰基化合物. 在 1 小时的反应时间内,各种炔丙醇的产率都很高(高达 99%)。与 TBHP 的 (salqu) 铜 (II) 配合物可与在 α 位含有烷基的炔丙醇一起使用,而炔丙醇很难用其他常用方法进行选择性氧化。通过使用这种催化方案,炔醇的氧化比分离的羟基、三键或炔丙基亚甲基的氧化也获得了优异的选择性。