Spiro [cyclopropane-1, 2'-indene]-1', 3'-diketone derivative and synthesis method thereof
A synthesis method and cyclopropane technology are applied in the fields of medicine, organic synthesis, and pesticide intermediates, which can solve the problems of complexity and low diastereoselectivity, and achieve the effects of high selectivity and yield, and good industrial application prospects.
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[0024] The following are specific embodiments of the present invention and in conjunction with the accompanying drawings, the technical solutions of the present invention are further described, but the present invention is not limited to these embodiments.
[0025] General method for the synthesis of substituted spiro[cyclopropane-1,2'-indene]-1',3'-dione derivatives
[0026] As shown in the reaction formula in the figure, the synthesis steps of spiro[cyclopropane-1,2'-indene]-1',3'-dione derivatives (I) provided by the present invention are as follows: add 0.1 mmol Sulfur ylide derivatives (Ⅱ) (such as: phenylthioylide, etc.), substituted 2-ethylene-1H-indene-1,3(2H)-dione compounds (Ⅲ) (such as: 2-ethylene Base-1H-indene-1,3(2H)-dione, etc.) 0.1mmol, base (such as: Cs 2 CO 3 etc.) 1.2mmol, then add 2~3ml solvent (such as: HFIP), react at room temperature, add water or saturated salt solution after the reaction, then extract with organic solvent, dry, distill and concentr...
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