Levocetirizine Dihydrochloride was prepared from benzoyl chloride by acidylation,hydrogenation,cyclization with an overall yield of 8.05%.

以苯甲氯为料,经,还,环合等反应合成左旋西替利嗪盐酸盐,反应总收率为8.05%。

The essence of deacetylation reaction of chitin was the hydrolysis of N-alkyl ethanamide.

摘要甲壳质反应其本质是N-烷基的水解。

The target compound was synthesized from N-benzyl protected aminoacetophenone through hydrogenation,benzoylation and reduction.

以氮-苄基保护基酮为料，经氢，苯甲，还三步合成双苯甲沙丁醇酯。

Method The target compound was synthesized from clarithromycin via hydrolyzation,acetylation,cyclic carbonatation,oxidation,decarbonatation,acylation,cyclic carbamatation and cyclization.

方法以克拉霉素为起料,经水解、、环碳酸酯、氧、碳酸酯、、环氨基甲酸酯和环合等反应合成目标合物。

METHODS Terazosin hydrochloride was synthesized from anhydro-piperazine via acylation,reduction,amination,salification etc.

方法以无水哌嗪为起料,经、还、、成盐等反应制得盐酸特拉唑嗪。

The chemical modification methods of food proteins are summarized,including acylation,deamidation,phosphorylation,glycosylation,covalent cross-linking effect etc.

综述了作用、去作用、磷酸作用、糖基作用、共价交联作用等食品蛋白质的学改性技术及方法。

The propionyl chloride was found to be the appropriate acylating agent in terms of the cost.

通过成本比较,认为丙氯是合适的剂。

Chloroform being solvent,under bath heat,4 hydroxymethyl caged bicyclic phosphate acylated with pentanoyl chloride and hexanoyl chloride dividedly.

用氯仿作溶剂,在浴温条件下,4羟甲基笼状双环磷酸酯分别与戊氯、己氯发生反应。

OBJECTIVE:To study the process of acetylized racemization of D-penicillamine in the acidic condition.

目的研究D-青霉在酸性条件下进行外消旋的工艺。

This paper contains two parts: (1) Trisubstituted Cyclopropane and FluorinatedAlkynone; (2) Phosphate Ester and Phosphonyl Compounds.

(1)三取代环丙烷和含氟炔酮;(2)膦酸酯和膦物。

Using the method of latex polymerization,poly vinyl acetate was synhesized with PVA as protective colloid,which was crosslinked with formylamine-group containing component.

采用乳液聚合的方法,以聚烯醇为保护胶体合成聚醋酸烯乳液,并用含甲基的组分与其交联。

The hydroxyl value of epoxy-containing polyester was determined by analyzing acetification principle and using acetyl chloride as acetifier and methylene chloride as solvent.

通过对其理分析,选用氯作剂、二氯甲烷作溶剂,测定含环氧基聚酯的羟值。

In this paper, the synthesis of 2 - chloranthraquinone and 2 - aminoanthraquinone was studied.It was prepared from phthalic anhydride by acetyiation, hydrolysis and cyclization.

以苯酐和取代苯为料,经过、水解及环合反应,合成了2-氯蒽醌和2-氨基蒽醌,并对影响收率的工艺条件进行了研究。

The effects of the catalyst dosage and the preparation conditions of HZ-1 zeolite,for example, number of exchange times on the benzoylation of toluene were studied.

并考察了HZ-1沸石交换次数等制备条件和催剂用量对甲苯的苯甲反应的影响。

The acetylation and deacetylation of histone is charged by a pair of protea se with antistatic function on each other,which are histone transacetylase and histone deacetylase.

组蛋白和去由一对功能相互拮抗的蛋白酶——组蛋白基转移酶和组蛋白去酶负责。

Acylation activity of hydroxyl groups in methyl cholicate has been determined by the use of methacryloyl chloride, methacryloyl anhydride and methacrylic acid as the acylating agents.

以甲基丙烯氯、甲基丙烯酸酐和甲基丙烯酸作剂，研究了胆酸甲酯分子中羟基的反应活性。

P-Brom-ethylphene was prepared by brom-phene by means of Friedel-Crafts and Huang Ming-long reactions. The synthesis can be industrialized because of good quality, high yield and low cost.

对溴苯是以溴苯为料,经付克,黄鸣龙还等反应合成,其质量和收率较高,成本较低,具有工业意义。