查询词典 crotonate
- 与 crotonate 相关的网络例句 [注：此内容来源于网络，仅供参考]
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An unusual intramolecular nucleophilic reaction of α carbon anion of crotonate was discovered and the imidazo[1,5 a ]pyridine derivatives were sythesized with a novel tandem reaction.
发现 5 咪唑甲醛(1)与γ溴代巴豆酸酯(2 )在弱碱条件下首先进行亲核取代反应生成 3，继而生成γ碳负离子并转移到α位，然后进行分子内亲核进攻成环、脱水生成 4的串联反应。
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Condensation of cinnamaldehyde with methyl crotonate in the presence of alcohol-flee potassium methoxide gives,after hydrolysis,p-phenyl-benzoic acid in low yield.Its structure has been ascertained by direct comparison with an au- thentic sample.
桂皮醛与α-丁烯酸甲酯在催化剂去醇的甲氧基钾影响下进行反应，得到低产率的对-苯基-苯甲酸，共结构经用已知方法所得同样的酸直接加以比较而确定。
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Densities and viscosities of the binary mixture of ethyl crotonate with ethanol at different compositions were determined at the temperature range from 293.15K to 343.15K and under atmospheric pressure by using a vibrating U-shaped tube densimeter and Ubbelohde suspended-level viscometer.
在常压下采用U形振动管密度计测定了巴豆酸乙酯与乙醇的混合液在293.15~343.15K下的密度。
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The density and viscosity were measured by a vibrating densimeter(model DA-505U) and a Ubbelohde suspended-level viscometer at atmospheric pressure for ethyl crotonate + ethanol,crotonic acid + ethanol.
在常压下利用DA-505U型振动管密度仪、乌氏毛细管粘度计测定了巴豆酸乙酯-乙醇、巴豆酸-乙醇两个体系的密度和粘度。
- 推荐网络例句
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For a big chunk of credit-card losses; the number of filings (and thus charge-off rates) would be rising again, whether
年美国个人破产法的一个改动使得破产登记急速下降，而后引起了信用卡大规模的亏损。
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Eph. 4:23 And that you be renewed in the spirit of your mind
弗四23 而在你们心思的灵里得以更新
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Lao Qiu is the Chairman of China Qiuyang Translation Group and the head master of the Confucius School. He has committed himself to the research and promotion of the classics of China.
老秋先生为中国秋阳翻译集团的董事长和孔子商学院的院长，致力于国学的研究和推广。