acetic anhydride

N-Ethyl-N-( β-methoxycarbonylethyl) aniline was purified by acetic anhydride as the acylating agent, the average purity of the product was 98.5% and average yield was 93.8% after purification.

再用醋酐为酰化剂进行精制，精制后产品平均含量为98.5%，收率为93.8%。

互联网摘选

Corn starch, modified by acid, can be acetylated to starch acetate by treatment with acetic anhydride.

以酸解醋酸淀粉为主要原料,添加增强剂、玉米淀粉和木薯淀粉等原料, 制成了一种新型粘合剂.

互联网摘选

The kinetics of esterification of linalool with acetic anhydride was studied.

研究了芳樟醇与乙酸酐酯化反应动力学.

互联网摘选

The reaction took place at 120 ℃ by using acetic anhydride as its acylating agent.

以乙酐作酰化剂，120℃反应；

互联网摘选

After cleavage from resin, only the target peptide could be absorbed by gold nanoparticles, because the unreacted amino groups is capped by the addition of acetic anhydride and pyridine afte every step of reaction coupling amino acid.

因为合成过程中，每一步使用乙酸酐和吡啶封闭未反应的氨基，所以只有目标多肽会通过半胱氨酸的巯基与纳米金作用。

互联网摘选

Innovation on process of chloroacetic acid by acetic anhydride method was introduced.

介绍了醋酐法氯乙酸生产工艺的改进。

互联网摘选

Study of chain transfer to acetic anhydride in the polymerization of tetrahydrofuran

四氢呋喃在苯中聚合向醋酸酐链转移的研究

互联网摘选

The riboflavin tetraacetate was synthesized starting from riboflavin and acetic anhydride, and the solid superacid ZrO_2-SO_4~ ( 2-) as catalyst.

对固体超强酸ZrO2－SO4~（2－）催化合成核黄素四乙酸酯进行了研究。

互联网摘选

Amino 4 methoxyl acetylaniline was synthesized acetylization ofp-methoxylaniline with acetic acid and acetic anhydride, then nitration and reduction.

以对甲氧基苯胺为原料,用冰醋酸和醋酸酐作乙酰化剂,经乙酰化 、 浓硝酸硝化、铁粉还原合成了3-氨基-4-甲氧基乙酰苯胺.

互联网摘选

Baeyer-Villiger Reaction with Sodium Percarbonate in acetic anhydride

过碳酸钠-醋酸酐作用下的Baeyer-Villiger反应

互联网摘选

Add the crystalline dihydrate ( 5g) to acetic anhydride ( 10?? in a beaker. THE CRYSTAL STRUCTURE OF THE ADDITION COMPOUND OF HEXAMETHYLENETETRAMINE WITH BENZYL CHLORIDE

向盛有10？蟠姿狒？的烧杯内加入5g二水合物结晶。六次甲基四胺与氯化苄加合物的晶体结构

互联网摘选

Synthesis of terpinyl acetate from terpineol and acetic anhydride with solid superacid SO~ 2-_4/ TiO_ 2-Ce~ 4+ as catalyst had been studied for the first time.

并以该固体超强酸SO24-/TiO2-Ce4+为催化剂，松油醇和乙酸酐为原料合成乙酸松油酯。

互联网摘选

Tar was extracted from the mother liquid of the carbonylation synthesis of acetic anhydride reaction. The extracted tar was analyzed by GC/ MS method. The reaction mechanism of tar formation in acetic anhydride synthesis were studied in this article.

通过对羰基合成醋酐反应副产物焦油物质进行GC/MS分析，对焦油生成的反应机理作了较详细的研究。

互联网摘选

New progress for phenylacetone synthesis from organic zinc reagent and acetic anhydride was studied.

实验研究了以氯化苄为原料合成药物中间体苯基丙酮的新工艺.

网络文摘精选

Acylation of toluene with Acetic Anhydride over h β zeolite

Hβ分子筛催化的甲苯与乙酸酐（AA）酰化反应研究

互联网摘选

Sulfuric acid and acetic anhydride were used as a cyclizing agent to prepare Ofloxacin intermediate.

用硫酸乙酐混合物作环合剂,制备了氟嗪酸中间体.

互联网摘选

A analytic method by titration using acetic anhydride as age nt is related in this paper.

所作的工作建立了以乙酸酐为掩蔽剂,用盐酸标准溶液滴定二甲胺中三甲胺含量的分析方法.

互联网摘选

sulfonated epdm ionomers ( s-epdm) were prepared with concentrated sulfuric acid and acetic anhydride.

用浓硫酸和醋酸酐与三元乙丙橡胶（EPDM）反应制备了磺化三元乙丙橡胶离聚物（S-EPDM）。

互联网摘选

The preparation of N-acetyl-D-glucosamine ( N AG) by D-glucosamine hydrochloride ( GAH) and acetic anhydride was studied.

研究了以氨基葡萄糖盐酸盐（GAH）为原料、乙酸酐为酰化剂制备了N-乙酰-D-氨基葡萄糖（NAG）。

互联网摘选

Acetylsalicylic acid was synthesized from salicylic acid and acetic anhydride catalyzed by strong-acid cation exchange resin.

以水杨酸和乙酸酐为原料、强酸阳离子交换树脂为催化剂合成阿司匹林.

互联网摘选

The reaction of synthesizing titanyl organic compounds from titanium tetrabutoxy and acetic anhydride has been studied with FTIR, NMR and TGA.

用FTIR、NMR和TGA等研究了钛酸丁酯与乙酐合成钛氧有机物的反应；

互联网摘选

TiO_2 nanocrystalline was prepared by a emulsion method in the mixed solvent of cyclohexane and acetic anhydride using titanyl organic compound as the precursor.

以钛氧有机物为前驱体，利用微乳液法制备了纳米TiO2微晶。

互联网摘选

Sulfonated EPDM ionomers ( S-EPDM ) were prepared with concentrated sulfuric acid and acetic anhydride.

用浓硫酸和醋酸酐与三元乙丙橡胶(EPDM ) 反应制备了磺化三元乙丙橡胶离聚物 ( S-EPDM).

互联网摘选

The condensation-cyclization cascade reaction of aromatic aldehyde with two equiv of 4-hydroxy-6-methyl-pyrone in the presence of acetic anhydride was studied by using ionic liquid as both reaction medium and promoter.

研究了在离子液体介质中，芳香醛和两分子6-甲基-4-羟基吡喃酮在乙酸酐存在下的缩合成环反应，并通过该反应合成了一系列双吡喃酮并吡喃类化合物。

互联网摘选

N-phenyl maleimide was synthesized ring dehydration catalyst of nickel diacetylacetonate ( Ni ( ac ac ) 2 ) by acetic anhydride method.

以乙酰丙酮镍为闭环脱水催化剂,运用改进的醋酐法,合成了N - 苯基 马来酰亚胺.

互联网摘选

Many of China's producers adopt interrupter chloration process by brimstone catalyst, however continuous chloration reactor by acetic anhydride catalyst has been used abroad.

我国绝大多数氯乙酸生产企业采用以硫磺粉为催化剂的间歇氯化生产工艺，而国外大都采用连续化氯化反应器，以醋酐为催化剂。

互联网摘选

This may be readily converted to the anhydrous salt by reaction with a readily hydrolysed material, such as acetic anhydride.

这和易水解的物质如醋酸酐反应可以很容易转变为无水盐。

词典精选例句

Aspirin was synthesized from salicylic acid and acetic anhydride by sodium bisulfat as catalyst.

用一水硫酸氢钠为催化剂由水杨酸与乙酐酯化合成阿司匹林.

互联网摘选

The effects as the dosage catalyzer and acetic anhydride had been studied in new process.

并探讨新工艺中,异构化催化剂的用量、酰化剂醋酐的配比对乙酰甲胺磷的收率的影响.

互联网摘选

Sulfur method replaced by acetic anhydride method for chloroacetic production is the trends in domestic.

指出在国内用醋酐法代替硫磺法生产氯乙酸的必然趋势.

互联网摘选