Catalytic Synthesis of Atropisomeric <i>o</i>-Terphenyls with 1,2-Diaxes via Axial-to-Axial Diastereoinduction
作者:Qianwen Gao、Chenggui Wu、Shuang Deng、Lisha Li、Ze-Shui Liu、Yu Hua、Jinxiang Ye、Chang Liu、Hong-Gang Cheng、Hengjiang Cong、Yinchun Jiao、Qianghui Zhou
DOI:10.1021/jacs.1c02405
日期:2021.5.19
and convergent strategy for the assembly of atropisomeric o-terphenyls with 1,2-diaxes via palladium/chiral norbornene cooperative catalysis and axial-to-axial diastereoinduction. Readily available aryl iodides, 2,6-substituted aryl bromides, and potassium aryl trifluoroborates are used as the building blocks, laying the foundation for diversity-oriented synthesis of these scaffolds (46 examples).
在此,我们报告了通过钯/手性降冰片烯协同催化和轴-轴非对映诱导组装具有 1,2-二轴的阻转异构邻三联苯的模块化和收敛策略。容易获得的芳基碘化物、2,6-取代的芳基溴化物和芳基三氟硼酸钾被用作构建块,为这些支架的多样性导向合成奠定了基础(46 个例子)。其他特点包括独特的轴向到轴向非对映感应模式、在一次操作中构建两个轴以及步进经济。执行 DFT 计算以合理化轴向到轴向的非对映诱导过程。证明了该方法在制备阻转异构低聚苯基、手性催化剂和配体中的合成效用。