1,6-Conjugate addition of para-quinone methides using gem-diborylcarbanions: Practical access to gem-diborylalkanes bearing vicinal tertiary/quaternary stereocenters

Pu-Zhang Zi, Xing-Bang Liu, Quan-Hong Zhao, Min He, Yuan Huang
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Abstract

A novel, efficient and pragmatic method to prepare gem-diboron products with vicinal tertiary/quaternary stereocenters using LiTMP-mediated 1,6-conjugate addition of gem-diborylalkanes to para-quinone methides was described for the first time. The results showed that various gem-diboron products with vicinal tertiary and quaternary stereocenters could be formed within 15 ​min at ambient temperature. This simple protocol has also been applied for the efficient synthesis of the analogue of Bedaquiline.

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使用宝石二硼烷酮对对醌甲酰胺进行 1,6-共轭加成:获得带有邻位叔/季立体中心的宝石二硼烷的实用途径
本研究首次描述了一种新颖、高效和实用的方法,该方法利用 LiTMP 介导的 1,6 共轭物加成对醌甲酰胺,制备具有邻位叔位/季位立体中心的宝石-二硼产品。结果表明,在常温下 15 分钟内就能形成具有邻接三级和四级立体中心的各种宝石-二硼产物。这一简单的方案还被用于高效合成贝达喹啉的类似物。
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