Enantioselective Synthesis of Five-Membered-Ring Atropisomers with a Chiral Rh(III) Complex
作者:Saad Shaaban、Houhua Li、Felix Otte、Carsten Strohmann、Andrey P. Antonchick、Herbert Waldmann
DOI:10.1021/acs.orglett.0c03355
日期:2020.12.4
chemistry, and efficient methods for their synthesis are in high demand. This applies in particular to atropisomers derived from five-membered aromatic rings because their lower barrier for rotation among the biaryl axis limits their asymmetric synthesis. We report here an enantioselective C–H functionalization method using our chiral RhJasCp complex for the synthesis of the biaryl atropisomer types that
轴向手性阻转异构化合物广泛用于不对称催化和药物化学中,对合成的有效方法有很高的要求。这尤其适用于衍生自五元芳族环的阻转异构体,因为它们在联芳基轴之间旋转的较低阻挡层限制了它们的不对称合成。我们在这里报告了一种手性Rh Jas Cp络合物的对映选择性CH功能化方法,用于合成可从三个不同的五元环杂环中获得的联芳基阻转异构体类型。
Ir(III)-Catalyzed Carbenoid Functionalization of Benzamides: Synthesis of <i>N</i>-Methoxyisoquinolinediones and <i>N</i>-Methoxyisoquinolinones
作者:Ravindra S. Phatake、Pitambar Patel、Chepuri V. Ramana
DOI:10.1021/acs.orglett.6b01072
日期:2016.6.17
A mild and efficient Ir(III)-catalyzed C-H carbenoid functionalization strategy has been developed to access. N-methoxyisoquinolinediones and N-methoxyisoquinolinones. The reaction proceeds efficiently in high yield at room temperature over a broad range of substrates without requirement of any additional oxidants or a base.