酮羰基取代的聯(lián)烯三元環(huán)的區(qū)域選擇性親核加成及應用
[Abstract]:Diene is a class of highly active organic molecules. As an important organic synthetic block, it has high application value in modern organic synthesis. The nucleophilic addition reaction of diene is a very important organic reaction, but because there are many sites in the reaction, it is necessary to control the site in order to obtain the selective product. The introduction of functional groups to the terminal of bienes can effectively change the distribution of electron clouds. When they are connected with the electron functional groups, the density of intermediate carbon electron clouds can be reduced, and they tend to occur various nucleophilic addition reactions. Based on the multiple reaction sites of cyclopropyldienone, various complex molecules were constructed by using different nucleophilic reagents in high region and stereoselectivity. The main contents of this paper are as follows: in the first part, the nucleophilic addition of cyclopropylenone with sodium sulfonate derivatives as nucleophilic reagent was studied. We found that the addition products at different sites can be controlled in different solvents, 尾 -sulfonylation products can be obtained in MeOH and 緯 -sulfonylation products can be obtained in DMSO, the yields of two types of sulfonylation are very high, and the stereoselectivity is very good. At the same time, the mechanism of the reaction has also been studied in detail. Then we cyclized the 尾 -adduct to get tetrasubstituted furan products. At the same time, we also developed a one-pot method to obtain tetrasubstituted furan products from cyclization of cyclopropylenone with sodium benzenesulfonate by direct iodine cyclization. And study on the transformation of the product of tetra-substituted furan. In the second part, the products of 尾, 緯 -dinitrification, 緯 -nitration and intramolecular oxidation to form oxime were obtained by reaction of sodium nitrite with cyclopropyldienone in different solvents. 尾, 緯 -dinitrification products were obtained in CH3CN solvent; 緯 -nitration products were obtained in DMSO solvent; in CH3OH solvent, 尾, 緯 -dinitrification products could undergo intramolecular oxidation to produce oxime.
【學位授予單位】:浙江理工大學
【學位級別】:碩士
【學位授予年份】:2017
【分類號】:O621.256.7
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