而由混合酸酐或双烯酮代替酰氯，中间体也可能是烯酮或烯醇5。
Similarly, using diketene to replace mixed anhydride or acid chloride, intermediate enol 5 May be obtained.
计算结果表明，氟代和氯代磷杂硫烯酮为累积双烯结构，磷杂硫烯酮的异构体含CP三键，所有分子都具有弯曲几何构型。
The results of calculation show that fluophosphathioketene and chlorophasphatioketene presents cumulative double bonds, isomer presents C(P)triple bonds, all of molecules have a trans-bent geometries.
本文对酮的二甲硅基双烯醇醚的合成反应机理和反应条件进行了探讨，在此基础上合成了四个酮的二甲硅基双烯醇醚，产率较高。
The synthetic mechanism and conditions of dimethylsilyl bis-enol ethers of ketones were studied and four dimethylsilyl his-enol ethers of ketones were synthesized and the yields were high.
方法：以双酮为原料，结合双烯孕腈的药物结构特点对双炔失碳酯进行化学结构改造。
Methods: Referring to dienogest's construction features, we reconstructed anordrin be- ginning with diketone.
建立了高效液相色谱法测定妊娠双烯醇酮醋酸酯合成工艺中裂解和氧化、水解两部分产品的分析方法。
A method of HPLC has been established for quantitative determination of concentrations of acetolysis and hydrolysis solutions in the synthesis technology of 16 _ dehydropregnenolone acetate.
建立了高效液相色谱法测定妊娠双烯醇酮醋酸酯合成工艺中裂解和氧化、水解两部分产品的分析方法。
A method of HPLC has been established for quantitative determination of concentrations of acetolysis and hydrolysis solutions in the synthesis technology of 16 _ dehydropregnenolone acetate.
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