Oxone-DMSO Triggered Methylene Insertion and C(sp<sup>2</sup>)−C(sp<sup>3</sup>)-H−C(sp<sup>2</sup>) Bond Formation to Access Functional Bis-Heterocycles
作者:Jaspreet Kour、Vunnam Venkateswarlu、Praveen K. Verma、Yaseen Hussain、Gurudutt Dubey、Prasad V. Bharatam、Subash C. Sahoo、Sanghapal D. Sawant
DOI:10.1021/acs.joc.9b03477
日期:2020.4.3
Metal-free insertion of a methylene group was achieved for the construction of a new C(sp2)–C(sp3)-H–C(sp2) bond in order to prepare novel bis-heterocyclic scaffolds. The complete mechanistic investigations included experimental study and DFT calculations, and various symmetric and unsymmetric bis-pyrazoles as well as other pyrazole-based bis-heterocyclic molecules were prepared in moderate to high
为了制备新型的双杂环支架,实现了新的C(sp 2)–C(sp 3)-H–C(sp 2)键的构建,实现了无金属亚甲基的插入。完整的机理研究包括实验研究和DFT计算,并且以中等到高产率制备了各种对称和不对称的双吡唑以及其他基于吡唑的双杂环分子。不对称吡唑中桥连亚甲基的进一步修饰产生了手性中心,从而扩展了该方法的范围。