丁烯

Acetaldehyde generated from the 2 - butene aldehyde carbonyl and the reaction is the condensation of methylene ...

由乙醛生成2－丁烯醛的反应是羰基与亚甲基发生缩合的。。。

The acylation of 2,3-dimethyl-2-butene by acetic anhydride in the presence of H3PO4 was investigated.

在H3PO4存在下进行了2，3-二甲基-2-丁烯与乙酐的酰化反应。

It was found that H3PO4 is an effective catalyst for the acylation of 2,3-dimethyl-2-butene by acetic anhydride at room temperature.

结果表明，H3PO4是室温下催化2，3-二甲基-2-丁烯与乙酐酰化反应的有效催化剂。

FeCl_3 was used to catalyse the acylation reaction of triisobutylene by acetic anhydride at room temperature.

室温下FeCl3用于催化三聚异丁烯与乙酸酐的酰化反应。

It was found that SnCl_2·2H_2O is an effective catalyst for the acylation of 2,3-dimethyl-2-butene by acetic anhydride at room temperature.

发现SnCl2·2H2O是室温下2，3-二甲基-2-丁烯与乙酐进行酰化反应的有效催化剂。

It is broken down via phenylalanine to give acetyl CoA and fumaric acid.

它通过苯丙氨酸降解出乙酰辅酶 A 和反丁烯二酸。

In this thesis, the nickel based mixed oxides aerogel catalyst was prepared by sol-gel-supercritical drying method and compared with that prepared by IM method.

研究新的技术，制备高性能的用于顺丁烯二酸酐选择加氢的催化剂是具有理论和实际应用价值的课题。

The influences of the reaction conditions on the grafting rate of dibutyl maleate to black N330 and the grafted black N330 on the physical properties of NR vulcanizate were investigated.

探讨炭黑N3 3 0表面固相接枝顺丁烯二酸二丁酯的反应条件对DBM接枝率的影响及炭黑接枝DBM对NR硫化胶物理性能的影响。

Side-stream experiment for the removal of sec-butanol from recycle butylenes by adsorption on adsorbent PUMS-01 was carried out in a methyl ethyl ketone unit.

对甲乙酮装置循环丁烯脱除仲丁醇吸附剂PUMS-01进行了工业放大实验，实验结果表明产品性能达到了小试实验的水平。

Employing CuI(5 mol%), N,N-dimethylglycine hydrochloride(10 mol%) and K_2CO_3(2 equiv.) in refluxing THF as the optimized reaction conditions,the four-membered 4-alkylidene-2-azatidinones could be efficiently synthesized.

当以3-溴-3-N-苯基-丁烯酰胺为底物，在5 mol%CuI为催化剂，10 mol%N，N-二甲基甘氨酸盐酸盐为配体，2当量K_2CO_3作碱，THF回流的反应条件下，可以高效的合成2-亚甲基-4-氮杂环丁酮类化合物。

By the time of its fall, most of the prisoners were writers who had written against the corruptions of the government.

到它被攻陷的时候，里面多数的犯人是写了反对政府贪污文章的作家。

The most obvious variation to ovum morphological character was that the color was changed from light green to sepiaceous in embryonic development, and all the ovums were almost hatched after 96h.

在胚胎发育过程中卵的形态特征最明显的变化是颜色从淡绿到深褐色，卵在发育96h后卵基本全部孵化。