All the chief difficulties crop up in the synthesis of the enone ( 1 ).

所有的主要难点都涌现在烯酮 ( 1 ) 的合成中.

辞典例句

Ketenes, notably dimethyl ketene, readily undergo oligomerization and polymerization.

烯酮, 特别是二甲基烯酮, 很容易齐聚和聚合.

辞典例句

Thermolysis of the latter furnished the cyclohexadienone system.

后者经过热解,就转变成环己二烯酮的衍生物.

辞典例句

CONCLUSION The main constituents are E - ocimenone and Linalool.

结论柳茶的主成分为E - 罗勒烯酮和芳樟醇.

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In low temperature, reaction of ketone with sodium acetylide synthesized 1 - ethynyl - 2,3, 4,5 - tetramethyl - 2 - cyclopentene - 1 - ol; 1,2 - diphenyl - 2 - hydroxy - 3 - butine - 1 - one; 3,4 - diphenyl - 1,5 - hexadiine - 3,4 - diol and 3,4 - diphenyl - 3 - cyclopentene - 1 - one.

报道了在低温条件下, 以邻二酮和α-环烯酮为原料与炔钠反应,合成了2,3, 4,5-四甲基-1-乙炔基-2-烯-环戊醇、1, 2 - 二苯基 -2 - 羟基 -3 - 丁炔 -1 - 酮、3, 4 - 二苯基 -1,5-己二炔-3,4 - 二醇和3,4 - 二苯基 -3 - 环戊烯 -1 -酮4种化合物.

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Methyl dihydrojasmonate was synthesized from 2 pentyl 2 cyclopentanone and methyl malonate by condensation and decarboxylation.

2-戊基环戊烯酮再与丙二酸二甲酯缩合,脱羧得到二氢茉莉酮酸甲酯.

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Studied the effect of quinocetone premix on the growth performance of the broiler chicken.

研究了喹烯酮预混剂对肉鸡生产性能的影响.

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Pharmacokinetics, toxicological functions, drug residue, withdrawal time and the application perspective are summarized in this article.

本文综述了喹烯酮的药代动力学 、 毒理作用 、 药物残留 、 休药期和应用前景等内容.

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The performance of modified AKD sizing agent in surface sizing of offset paper was introduced.

介绍了改性烷基烯酮二聚体(AKD)中性施胶剂在表面施胶中的使用效果.

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Similarly , using diketene to replace mixed anhydride or acid chloride, intermediate enol 5 may be obtained.

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.

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Synthesis of megastigmatrienone, an important tobacco fragrant component was summarized with 20 references.

简要综述了烟草香气成分巨豆三烯酮的合成研究概况.

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