乙酸的

A novel route for synthesis of methyl acetoacetate from acetone and dimethyl carbonate over solid base catalysts was proposed.

以碳酸二甲酯与丙酮为原料，在固体碱上合成乙酰乙酸甲酯，并考察了反应温度、反应时间、催化剂用量和原料摩尔比等因素对反应结果的影响。

The synthesis of fructone from ethyl acetoacetate and ethylene glycol using sulfonated activated carbon as solid acid catalyst was investigated.

以活性炭磺化制得新型固体磺酸磺化炭为催化剂，对乙酰乙酸乙酯和乙二醇合成苹果酯的催化工艺进行了系统研究。

The strongly acidic cation exchange resin catalyzed synthesis of fructone-B by the reaction of ethyl acetoacetate and 1,2-propanediol was studied.

以硫酸高铈铵为催化剂，通过乙酰乙酸乙酯分别与乙二醇和1，2-丙二醇反应合成了苹果酯-A和苹果酯-B，研究了催化剂等有关因素对产品收率的影响。

The synthesis of celery ketone from butyl aldehyde and ethyl acetoacetate was improved with higher yield by using solid superbase(K2O/γ-Al2O3) for the first time.

在正丁醛和乙酰乙酸乙酯为原料合成芹菜酮的合成过程中，对其催化方法进行改进。

Any of three compounds (acetoacetic acid, acetone, and/or beta-hydroxybutyric acid) found in excess in blood and urine of persons with metabolic disorders.

三种化合物中任意一种（乙酰乙酸、丙酮和/或β羟基丁酸），人体的血液和尿中大量含有。

The method was proved to be simple,rapid,practical and highly sensitive.It is an efficient method for the quality control of acetoacetic ester.

本法简便，快速、实用，灵敏度高，可有效地用于乙酰乙酸乙酯的质量控制。

Objective To determine the contents of residual acetone in acetoacetic ester,the raw material for the synthesis of Edaravone, by gas chromatography.

摘要］ 目的：用气相色谱法测定依达拉奉合成起始原料乙酰乙酸乙酯中丙酮的残留量。

Extracting Tea Polyphenolswith acetoacetic ester is a Key technique in TP indus- trial production.

乙酸乙酯萃取茶多酚是茶多酚工业生产中的关键技术。

Production technology of synthesis of allantoin are reviewed, including glyoxal oxidation, electrochemical synthesis, calcium glyoxylate synthesis, dichloroacetic acid synthesis, acetochloral method, and oxidative decarboxylation.

评述了乙二醛氧化法、电化学法、乙醛酸钙法、尿素三氯乙醛合成法、尿酸二氯乙酸法和尿酸氧化脱羧法等合成尿囊素的各种工艺。

ALDC can decompose a-Acetolactic Acid into Acetoin directly and rapidly.

aldc的可分解-乙酰乙酸乙成直接和迅速。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。