An efficient double catalytic system, combining chiral amine and 2-mercaptobenzoic acid, is applied for α′,β-regioselective [4+2] annulations of 2-cyclopentenone with a diversity of activated alkenes, constructing multifunctional chiral bicycle[2,2,1]heptane scaffolds in good to excellent yields and enantioselectivities. In comparison with the traditional cross-dienamine species between 2-cyclopentenone
Spirooxindoles as novel 3D-fragment scaffolds: Synthesis and screening against CYP121 from M. tuberculosis
作者:Holly J. Davis、Madeline E. Kavanagh、Tudor Balan、Chris Abell、Anthony G. Coyne
DOI:10.1016/j.bmcl.2016.05.073
日期:2016.8
and fragmentlibraries is an active area of research. The development of novel strategies to synthesise compounds with 3D character in order to expand the diversity of a fragmentlibrary was explored. A range of substituted bicyclo[2,2,1]spirooxindoles were synthesised using a Diels–Alder [4+2] cycloaddition reaction. Both diastereoisomers were isolated from the reactions and these 3D fragment scaffolds
Room-Temperature Palladium-Catalyzed Intramolecular Oxidative Aminocarbonylation of Vinylic C(sp<sup>2</sup>)-H Bonds with Amines and CO
作者:Xu-Heng Yang、Kai Li、Ren-Jie Song、Jin-Heng Li
DOI:10.1002/ejoc.201301284
日期:2014.1
A new, mild route to access 3-methyleneindolin-2-ones is presented that proceeds through a room-temperature, palladium-catalyzedintramolecularoxidative aminocarbonylation of alkenes with amines and CO. This method represents a new aminocarbonylation strategy by employing an oxidative functionalization of a vinyl C(sp2)–H bond.
提出了一种获得 3-亚甲基吲哚-2-酮的新的、温和的途径,该途径通过在室温下钯催化的烯烃与胺和 CO 的分子内氧化氨基羰基化进行。该方法代表了一种新的氨基羰基化策略,通过采用氧化功能化乙烯基 C(sp2)-H 键。