- Synthesis method of ethyl bicyclic phosphite
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The invention discloses a synthesis method of ethyl bicyclic phosphite, belonging to the technical field of organic matter synthesis. Based on an existing method of preparing the ethyl bicyclic phosphate by using phosphorus trichloride and trimethylolpropane, the steps of condition control such as feeding ratio and hydrogen chloride removal are optimized and improved; and the problem of relativelylow yield of the ethyl bicyclic phosphite obtained by directly reacting the phosphorus trichloride with the trimethylolpropane in the prior art is solved.
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Paragraph 0028-0047
(2019/04/27)
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- Oxygen atom insertion into iron(II) phenyl and methyl bonds: A key step for catalytic hydrocarbon functionalization
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Oxy-functionalization of metal-alkyl and ?aryl bonds is a key step in potential hydrocarbon oxidation catalysis. However, well-defined examples of M-R to ROH conversion are rare, especially for first-row transition metals. CpFe(CO)(NCMe)Ph reacts with oxygen or hydrogen peroxide to produce benzoic acid. Removing CO from the CpFe(L)(L')Ph framework allows simple oxygen atom insertion into the Fe-Ph bond. CpFe(P(OCH2)3CEt)2Ph reacts with Me3NO in THF to produce PhOH in high yield when Bronsted acids are added. Studies show that light promotes P(OCH2)3CEt dissociation from CpFe(P(OCH2)3CEt)2Ph, which facilitates the conversion to PhOH. The methyl analogue CpFe[P(OCH2)3CEt]2Me reacts with oxidants to produce MeOH.
- Mei, Jiajun,Pardue, Daniel B.,Kalman, Steven E.,Gunnoe, T. Brent,Cundari, Thomas R.,Sabat, Michal
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supporting information
p. 5597 - 5605
(2015/02/19)
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- INVESTIGATION OF THE STAUDINGER REACTION BETWEEN BICYCLIC PHOSPHITE AND DIAZO COMPOUNDS
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Nine bicyclic phosphatazines were synthesized by the Staudinger reaction between bicyclic phosphite (1) and diazo compounds (2-5), the Elemental Analysis data, IR, 31P NMR and Mass Spectral data of these compounds are reported.The reaction of diazoacetate with bicyclic phosphite was followed by 31P NMR, the concentration-time curve was simulated by Optimal Approximation with a computer.It was found that this reaction consisted of two steps, the first step was second-order and the second was first-order.A possible mechanism is also proposed.Key words: Staudingerreaction; bicyclic phosphite; phosphatazine; optimal approximation; NMR; IR.
- Pei, Chengxin,Xu, Xuanlong
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p. 143 - 148
(2007/10/02)
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