A dendrimer approach to high-spin polycarbenes. Conversion of connectivity from disjoint to non-disjoint by perturbation of nonbonding molecular orbital coefficients.

A dendrimer approach to high-spin polycarbenes. Conversion of connectivity from disjoint to non-disjoint by perturbation of nonbonding molecular orbital coefficients.
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DOI：
10.1021/ol060378n
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发表时间：
2006-04
期刊：
Organic letters
影响因子：
5.2
通讯作者：
Katsuyuki Hirai;E. Kamiya;T. Itoh;H. Tomioka
Katsuyuki Hirai;E. Kamiya;T. Itoh;H. Tomioka
中科院分区：
化学1区
文献类型：
--
作者：
Katsuyuki Hirai;E. Kamiya;T. Itoh;H. Tomioka

文献摘要

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[结构：在Sonogashira反应条件下，通过将3，5-双[4-[重氮（4-叔丁基-2，6-二甲基苯基）甲基]-3，5-二溴苯基乙炔基]苯乙炔与双（4-碘-2，6-二甲基苯基）重氮甲烷偶联制备五（重氮）化合物。通过辐照五重氮化合物产生的五卡宾在2.0K下具有高自旋态，S = 4.4。
[structure: see text] Pentakis(diazo) compound was prepared by coupling 3,5-bis[4-[diazo(4-tert-butyl-2,6-dimethylphenyl)methyl]-3,5-dibromophenylethynyl]phenylacetylene with bis(4-iodo-2,6-dimethylphenyl)diazomethane under Sonogashira reaction conditions. Pentakis(carbene) generated by irradiation of the pentakis(diazo) compound was shown to have a high-spin state with S = 4.4 at 2.0 K.