1,1-非替代环坦的C ((sp3) -C ((sp3) 和C ((sp3) -H键的激活
Chisato Mukai1, Yuu Ohta, Yuki Oura
1Division of Pharmaceutical Sciences, Graduate School of Medical Sciences, Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Japan. mukai@p.kanazawa-u.ac.jp
Journal of the American Chemical Society
|November 14, 2012
概括
这项研究表明,在未被激活的环白中,使用催化剂,出现了前所未有的C(sp(3)) -C(sp(3)) 键裂解. 通过新的循环添加反应合成了新的双环和螺旋环化合物.
科学领域:
- 有机化学 有机化学
- 催化剂是一种催化剂.
- 合成方法论 合成方法论
背景情况:
- 键裂变具有挑战性,特别是在未被激活的循环基中.
- (I) 催化提供了新的键激活和转换的潜力.
研究的目的:
- 为了实现前所未有的C ((sp ((3)) -C ((sp ((3)) 键裂解未被激活的环丹.
- 为复杂的多环结构开发新的合成路径.
主要方法:
- ((I) 催化cycloaddition的艾伦cyclopentane-alkynes. 这是一个非常好的方法.
- 在现场生成rhodabicyclo[4.3.0]nona-1,6-diene中间体.
- [7+2]循环添加通过β-C消除.
- 通过改变Rh (I) 催化剂,选择性地激活Cγ-H键.
主要成果:
- 成功地切割了未被激活的环丹C ((sp ((3)) -C ((sp ((3))) 键.
- 在良好的产量中形成双环[7.4.0]三甲衍生物.
- 通过选择性Cγ-H激活新型螺旋[2.4]赫骨的合成.
结论:
- (I) 催化使得环坦中前所未有的C (sp) -C (sp) 键裂变.
- 已经建立了用于bicyclo[7.4.0]tridecatriene和spiro[2.4]heptane骨架的新合成策略.
- 催化剂的修改允许选择性C-H激活,扩大合成效用.
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