乙,,线性基C4-C8和一些循环基的室温脱通过-碳多重键
Marco G Crestani1, Anne K Hickey, Xinfeng Gao
1Department of Chemistry, Indiana University , Bloomington, Indiana 47405, United States.
Journal of the American Chemical Society
|August 29, 2013
概括
这项研究表明,一种过渡性新型基复合物可以有效地脱线性基,形成α-olefin复合物. 这些复合物可以进一步功能化或释放自由的烯酸,在有机金属化学中表现出多功能反应性.
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.
- 无机化学 无机化学 有机化学
背景情况:
- 复合物以其催化活性而闻名.
- 阿尔干的脱是一种具有挑战性但重要的转变.
研究的目的:
- 为了研究过渡性新型烯复合物的脱能力.
- 为了合成和表征新的α-olefin复合物.
- 探索这些复合物的反应性和稳定性.
主要方法:
- 各种基与复合物的脱反应.
- 合成和分离-烯复合物.
- 使用多核核核磁共振光谱法进行表征 (包括HOESY,gHSQC,HMBC,dqfCOSY).
- 计算研究以了解结合和稳定性.
主要成果:
- 乙有效脱为乙烯,并与C4-C8基形成稳定的α-olefin复合物.
- 复合物的合成 [{PNP}Ti{η}2) -H2CCHR}CH2{t}Bu) ] (R = H,CH3,CH2CH3, (n) Pr, (n) Bu).这些复合物的合成方法是 (R = H,CH3,CH2CH3, (n) Pr, (n) Bu).
- 鉴定证实了几个复合物的二聚体和聚体的形成.
- 从使用各种试剂 (N2O,亚化物,类,亚醇) 的复合物中证明了烯的释放.
结论:
- 过渡性新型胺复合物是脱和α-olefin复合物形成的多功能试剂.
- 绝缘因素显著影响由此产生的烯酸添加物的稳定性.
- 合成的复合物提供了可控的氨酸释放和进一步功能化的途径.
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