乙酰氯

In this paper, Claisen condensation of isochroman ?4?one as starting material with diethyl oxalate is carried out to form β?diketone compound of isochroman ?4?one.

以异色满酮 4为起始原料，经Claisen缩合得其β二酮衍生物，再与水合肼进行Knorr反应环合成 3 乙氧甲酰基和 3 肼甲酰基异色满并吡唑衍生物，通过酰肼与糠醛反应成腙后，分别与巯基乙酸和氯乙酰氯反应合成了标题化合物

The main products are: organic alcohol, phosphite, chloride, cyclohexyl chloride, Propionyl chloride, such as more than 10 varieties.

主要产品有：有机醇类、亚磷酸、乙酰氯、环已甲酰氯、丙酰氯等十多个品种。

Eight novel N,N′-naphthalene acyl substituted aromatic acylamino thiocarbamide s(Ⅱ1~Ⅱ8) were synthesized from aryl acylhydrazine and α-naphthalene acyl isothiocyanate, which was obtained by the reaction of potassium thiocyanate with α-naphthalene acyl chloride obtained from 2-naphthylacetic acid and thionyl chloride in anhydrous benzene.

通过α-萘乙酸和SOCl2在无水苯中反应制得α-萘乙酰氯，与硫氰酸钾反应生成α-萘乙酰基异硫氰酸酯，再与芳基酰肼进行加成反应，合成8种新型N，N′-萘乙酰基取代芳乙酰胺基硫脲类化合物(Ⅱ1～Ⅱ8)。

Results show that, by using thionyl chloride and N,N-dimethyl formamide as chlorinating reagent and dichloromethane as solvent and taking -15℃ as reaction temperature, Z-iomer crystals with pale white color and stable to temperature can be obtained with an overall yield of 70%.

以2-（2-氨基噻唑－4-基）－2-甲氧亚氨基乙酸为原料，经盐酸化、氯代等反应合成了Z-2-（2-氨基噻唑－4-基）－2-甲氧亚氨基乙酰氯盐酸盐；氯代时以用亚硫酰氯和N，N-二甲基甲酰胺的混合物代替五氯化磷作氯化剂，并考察了温度和溶剂对氯代产物中Z-异构体和E-异构体收率的影响。

Eight novel N,N′-naphthalene acyl substituted aromatic acylamino thiocarbamides(Ⅱ1~Ⅱ8) were synthesized from aryl acylhydrazine and α-naphthalene acyl isothiocyanate, which was obtained by the reaction of potassium thiocyanate with α-naphthalene acyl chloride obtained from 2-naphthylacetic acid and thionyl chloride in anhydrous benzene.

通过α-萘乙酸和SOCl2在无水苯中反应制得α-萘乙酰氯，与硫氰酸钾反应生成α-萘乙酰基异硫氰酸酯，再与芳基酰肼进行加成反应，合成8种新型N，N′-萘乙酰基取代芳乙酰胺基硫脲类化合物(Ⅱ1～Ⅱ8)。

Secondly, 2-trichloroacetylpyrrole were synthesized in the diethyl ether anhydrous at room temperature.

以无水乙醚为溶剂，摩尔比为1：1的N-烷基吡咯和三氯乙酰氯，在常温下进行反应，得到2-三氯乙酰基吡咯。

The main products are as follows: Pharmaceutical Intermediate, Trimethyl Orthoformate , Triethyl Orthoformate, Sodium Methoxide, Power and solution Ethoxide,α-Chloropropionyl Chloride, Acetyl Chloride. Shandong Xinhua Junli Chemical Co.,Ltd.

公司主要产品为医药中间体，原甲酸三甲酯、原甲酸三乙酯、甲醇钠、乙醇钠、α-氯代丙酰氯、乙酰氯，其中原甲酸三甲酯、原甲酸三乙酯是国内唯一采用金属钠法工艺生产的企业。

A process for preparingp-fluo-2-(2-methyl-3-propionyl)-4-oxy-N,3-diphenyl-phenylbutylamide includes such steps as Friedle-Craft acylating of newly prepared phenylacetyl chloride and fluorobenzene under catalysis of AlCl3 to obtain 4-fluoro-phenylbenzyl ketone, brominating at carbonyl alpha position under catalysis of less AlCl3 to obtain alpha-bromo-4-fluo-phenylbenzyl ketone, and condensing with isobutyryl acetanilide under action of sodium ethoxide.

本发明涉及一种制备对氟－2－(2－甲基－3－氧丙基)－4－氧－N，3－二苯基－苯丁酰胺(1)的方法，其包括以下步骤：新制的苯乙酰氯与氟苯在AlCl3催化下进行Friedle－Craft酰化反应，得到对4－氟－苯基苄基酮(4)；化合物(4)在少量AlCl3催化下进行羰基α位溴化，得到α－溴－4－氟－苯基苄基酮(5)；然后(3)异丁酰乙酰苯胺在乙醇钠作用下与化合物(5)进行缩合。

Furoin was synthesized from furol with VB1 as the catalyst,which was then reacted with acetyl chloride, lauroyl chloride ,benzoyl chloride,α-furoyl chloride and 3-α-furyl acryloyl chloride,respectively;corresponding monoester compounds of furoin were synthesized in THF in the presence of sodium hydroxide under reflux.

以糠醛为基础原料，经维生素B1催化合成糠偶姻，再由糠偶姻分别和乙酰氯、月桂酰氯、苯甲酰氯、α-呋喃甲酰氯和3-α-呋喃烯丙酰氯反应，在NaOH/无水THF体系中，于水浴回流条件下合成了相对应的糠偶姻单酯类化合物。

The effect of chloroacetyl chloride and bromoacetyl bromide on yields of intermediates and nitrazepam was compared.

比较了氯乙酰氯和溴乙酰溴对中间体及硝基安定收率的影响。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。