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首页> 外文期刊>Journal of Organometallic Chemistry >Reactivity of bis(pyrazol-1-yl)methanes functionalized by 2-hydroxyphenyl and 2-methoxyphenyl on the methine carbon atom with W(CO)_5THF
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Reactivity of bis(pyrazol-1-yl)methanes functionalized by 2-hydroxyphenyl and 2-methoxyphenyl on the methine carbon atom with W(CO)_5THF

机译：在次甲基碳原子上被2-羟基苯基和2-甲氧基苯基官能化的双（吡唑-1-基）甲烷与W（CO）_5THF的反应性

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摘要

Reactions of 2-hydroxyphenyl and 2-methoxyphenylbis(pyrazol-1-yl)methanes as well as 2-hydroxyphenyl and 2-methoxyphenylbis(3,5-dimethylpyrazol-1-yl) methanes with W(CO)_5THF have been carried out. Heating 2-hydroxyphenylbis(pyrazol-1-yl)methane (L~1) with W(CO) _5THF in THF at reflux yielded complex (L~1)W(CO) _4.L~1, while similar reaction of 2-hydroxyphenylbis(3,5- dimethylpyrazol-1-yl)methane (L~2) with W(CO)_5THF resulted in the cleavage of a C_(sp3)-N bond to generate 1,2-bis(2-hydroxyphenyl) -1,2-bis(3,5-dimethylpyrazol-1-yl)ethane (L) and pyrazole derivative W(CO) _5(3,5-Me_2PzH) (Pz = pyrazol-1-yl). These two fragments were connected together through strong O...H-N and O-H...N hydrogen bonds to form complex L.[W(CO)_5(3,5-Me_2PzH)]_2. The analogous results were observed in the treatment of 2-methoxyphenylbis(pyrazol- 1-yl)methane (L~3) with W(CO)_5THF, which gave product L′.[W(CO)5(PzH)]2 (L′ = 1,2-bis(2- methoxyphenyl)-1,2-bis(pyrazol-1-yl)ethane) as well as certain amount of complex (L~3)W(CO)_4. In addition, during the reaction of 2-methoxyphenylbis(3,5-dimethylpyrazol-1-yl)methane (L~4) with W(CO)_5THF, partial decomposition reactions took place to yield complexes (L~4)W(CO)_4 and W(CO)_5(3,5-Me _2PzH), but no hydrogen bond was found between these two moieties.
机译：已经进行了2-羟基苯基和2-甲氧基苯基双（吡唑-1-基）甲烷以及2-羟基苯基和2-甲氧基苯基双（3，5-二甲基吡唑-1-基）甲烷与W（CO）_5THF的反应。将2-羟基苯基双（吡唑-1-基）甲烷（L〜1）与W（CO）_5THF的四氢呋喃溶液在回流条件下加热得到配合物（L〜1）W（CO）_4.L〜1，而2-的反应相似W（CO）_5THF形成的羟基苯基双（3,5-二甲基吡唑-1-基）甲烷（L〜2）导致C_（sp3）-N键裂解生成1,2-双（2-羟基苯基）- 1,2-双（3,5-二甲基吡唑-1-基）乙烷（L）和吡唑衍生物W（CO）_5（3,5-Me_2PzH）（Pz =吡唑-1-基）。这两个片段通过强大的O ... H-N和O-H ... N氢键连接在一起，形成复合物L. [W（CO）_5（3,5-Me_2PzH）] _ 2。在用W（CO）_5THF处理2-甲氧基苯基双（吡唑-1-基）甲烷（L〜3）中观察到相似的结果，得到产物L'。[W（CO）5（PzH）] 2（ L'＝ 1,2-双（2-甲氧基苯基）-1，2-双（吡唑-1-基）乙烷以及一定量的配合物（L〜3）W（CO）_4。此外，在2-甲氧基苯基双（3,5-二甲基吡唑-1-基）甲烷（L〜4）与W（CO）_5THF反应期间，发生了部分分解反应，生成了配合物（L〜4）W（CO ）_4和W（CO）_5（3,5-Me _2PzH），但在这两个部分之间未发现氢键。

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