BH/CH和BH/NH的催化级别脱交叉合:一个的过程到Carborano-Isoquinolinone
Yik Ki Au1, Hairong Lyu1, Yangjian Quan1
1Department of Chemistry and State Key Laboratory of Synthetic Chemistry , The Chinese University of Hong Kong , Shatin , NT, Hong Kong , China.
Journal of the American Chemical Society
|July 16, 2019
概括
这项研究证明了新型卡博拉诺-异诺衍生物的单合成. 该过程通过级联脱交联反应有效地形成新的-碳和-键.
科学领域:
- 有机金属化学
- 合成有机化学
- 化学
背景情况:
- 碳衍生物在材料科学和药物化学中具有价值.
- 对于复杂的碳化合物结构, 有效的合成途径是非常需要的.
- 级联反应提供了原子经济和简化合成途径.
研究的目的:
- 开发一种新型的级联脱交叉合反应,用于合成卡博拉诺-异诺衍生物.
- 在单过程中研究多重键 (B-H,C-H,N-H) 的顺序激活.
- 阐明反应机制,包括指导组和潜在的催化物种的作用.
主要方法:
- 使用级联脱交联的原则证明研究.
- 碳酸与胺的一反应.
- 连续激活B-H,C-H和N-H键.
- 循环和脱碳的步骤.
- 电化学分析 (CV) 和对照实验
- 隔离和介质的表征和标签.
主要成果:
- 容易合成以前无法获得的碳醇衍生物.
- 新-碳 (B-C) 和- (B-N) 键的高效构建.
- 在特定条件下证明B-C对B-N的选择性交叉合.
- 确定碳酸作为一个关键的指导组,通过现场脱碳化去除.
- 证据表明涉及高价值的 (Ir(V)) 物种和一种酸中间体.
结论:
- 已经建立了一种新且高效的单方法来合成carborano-isoquinolinone衍生物.
- 反应通过顺序的B-H/C-H和B-H/N-H交叉合进行,并有可能形成选择性的B-C键.
- 碳酸组在指导初始的B-C合中起着至关重要的作用.
- 机械学的洞察力指向B-H/N-H脱水合的新胺介导途径.
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