雙齒亞磷酸酯配體的合成及其在鐵催化的烯丙基醇取代反應(yīng)中的應(yīng)用
[Abstract]:The catalytic allyl substitution reaction of the transition metal has become an effective means to construct the C-C bond, the C-N bond, the C-O bond, the C-S bond, and the C-P bond. In general, the preparation of allyl-substituted products and their derivatives is obtained by the substitution reaction of allyl compounds with various nucleophiles. These classical synthesis methods generally require the already activated allyl compounds, such as allyl halides, allyl esters, allyl carbonates, phosphate esters, and related derivatives, and the like, all of which are derived from the corresponding allyl alcohol. The reaction steps are complex and the atomic economy is poor. Therefore, the nucleophilic substitution reaction of the allyl alcohol is directly catalyzed, and the research significance and the challenge are more. And the substitution reaction of the allyl alcohol is catalyzed by the complex of the cheap metal iron catalyst and the double-tooth phosphite ligand. In this paper, when the substitution reaction of the transition metal catalyzed allyl alcohol is studied, it is found that the Fe (OTf)2, together with the didentate phosphite ligand, can be used as a good catalytic allyl alcohol to replace the reaction, and the yield of the medium to the excellent is obtained, and the method has certain innovation and research significance in the organic synthesis method. In this research group, six didentate phosphite ligands L1-L6 were synthesized, and the ligands of this type were synthesized by the "one-pot method" of 3,3 ',5,5'-tetrat-butyl-2,2 '-dihydroxybiphenyl. The application of didentate phosphite ligand in the substitution reaction of allyl alcohol was also investigated. The reaction of cinnamyl alcohol and aniline was used as the template, and the effect of different catalyst, solvent, ligand, temperature and catalyst on the reaction of allyl substitution was investigated. and the optimized reaction conditions are as follows: under the protection of nitrogen,5 mol% of Fe (OTf)2 is used as a catalyst,5 mol% of L4 is used as a ligand, and the toluene is used as a solvent, and the toluene is used as a solvent, and the reaction is carried out for 12 hours under the condition of reflux, The sulfur compounds and the different allyl alcohol compounds are expanded to obtain high selectivity and moderate to excellent yield.
【學(xué)位授予單位】:鄭州大學(xué)
【學(xué)位級別】:碩士
【學(xué)位授予年份】:2017
【分類號】:O641.4;O621.251
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