在HV ((CO) 4 ((P-P) 中异常弱的金属键及其作为H ((*) 捐赠者的有效性
Jongwook Choi1, Mary E Pulling, Deborah M Smith
1Department of Chemistry, Columbia University, 3000 Broadway, New York, New York 10027, USA.
Journal of the American Chemical Society
|March 14, 2008
概括
在HV ((CO) 4 ((P-P) 中的V-H键异常弱,使得H*迅速转移到烯中. 这些化合物作为循环1,6-dienes的有效试剂.
科学领域:
- 有机金属化学 有机金属化学
- 催化剂是一种催化剂.
背景情况:
- 化复合物是已知的催化剂.
- 在有机合成中,V-H键的反应性是值得关注的.
研究的目的:
- 为了研究HV(CO) 4(P-P) 复合体中V-H键的异常弱点.
- 评估这些复杂物作为有机转化中的试剂的潜力.
主要方法:
- 化复合物的光谱表征.
- 对H*转移反应的动力学研究.
- 使用复合物的1,6-二烯的循环反应.
主要成果:
- 在HV (CO) 4 (P-P) 中的V-H键被发现异常弱 (55-58 kcal/mol).
- 与CpCr(CO) 3H相比,这些复合物表现出更快的H*转移到烯.
- 这些复合物是为1,6-二烯循环化提供有效的固体测量试剂.
结论:
- 较弱的V-H键负责增强的反应性.
- HV ((CO) 4 ((P-P) 复合物代表了用于二烯循环和H*转移反应的有前途的试剂类.
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