乙酰

The medical composite biological bone cement powder is mixture of apatite and polyamide component, and the polymaide component is fine powder formed by dissolving polyamide 6 or polyamide 66 in acetamide solution containing calcium chloride.

医用复合生物骨水泥粉由磷灰石和聚酰胺类成分组成的混合物，其中聚酰胺类成分为由聚酰胺6或聚酰胺66中的任一种溶解于含有氯化钙的乙酰胺溶液中所成的混合溶液在水中所形成的细粉。

By the B vitamins pantothenic acid to be part of a coenzyme, by thiol molecules with the acid or other organic acids acyl combined into a acetyl or another acyl-carrier involved in a variety of acyl synthesis and catabolism It is an important acyl coenzyme metabolism.

由B族维生素泛酸参与组成的一种辅酶，借分子中的巯基与乙酸或其他有机酸的酰基结合，成为一种乙酰基或另一些酰基的载体，参与酰基的各种合成和分解代谢，是酰基代谢中重要的辅酶。

The first committed step in fatty acid biosynthesis is the carboxylation of acetyl CoA to form malonyl CoA using CO2 in the form of bicarbonate HCO3-.

在脂肪酸的从头合成过程中，参入脂肪酸链的二碳单位的直接提供者并不是乙酰CoA，而是乙酰CoA的羧化产物——丙二酸单酰CoA(malonyl-CoA)。

In the first part, five new 4-acyl pyrazolone 4-ethyl-thiosemicarbazones compounds: 1-Phenyl-3-methyl-4-(4-bromo)benzal-pyrazol-5-one N(4)-ethyl-thiosemicarbazone (PM4Br BP-ETSC), 1-Phenyl-3-methyl-4-(4-methyl)benzal-pyrazol-5-one N(4)-ethyl-thiosemicarbaz -one (PM4MBP-ETSC), 1-Phenyl-3-methyl-4-benzal-pyrazol-5-one N(4)-ethyl-thiosemicarba -zone, 1,3-diphenyl-4-benzal-pyrazol-5-one N(4)-ethyl-thiosemicarbazone and 1-Phenyl-3-methyl-4-phenylacetyl-pyrazol-5-one N(4)-ethyl-thiosemi -carbazone have been synthesized and characterized by elemental analyses, IR, 1H NMR spectra and single-crystal XRD.

第一部分合成了五个4-酰基吡唑啉酮缩4-乙基-氨基硫脲化合物：1-苯基-3-甲基-4-（4-溴）苯甲酰基-5-吡唑啉酮缩4-乙基-氨基硫脲(PM4BrBP-ETSC)，1-苯基-3-甲基-4-(4-甲基)苯甲酰基-5-吡唑啉酮缩4-乙基-氨基硫脲(PM4MBP-ETSC)，1-苯基-3-甲基-4-苯甲酰基-5-吡唑啉酮缩4-乙基-氨基硫脲，1，3-二苯基-4-苯甲酰基-5-吡唑啉酮缩4-乙基-氨基硫脲和1-苯基-3-甲基-4-苯乙酰基-5-吡唑啉酮缩4-乙基-氨基硫脲，其中前四个具有光致变色性质。

In the third chapter, the synthesis of5-[(1"S)-1",2"-diacetyl-oxyethyl]-1-phenylpyrazol-3-carboxaldehyde oxime(2) from5-[(1"S)-1",2"-diacetyl-oxyethyl]-1-phenylpyrazol-3-carboxaldehyde(1) and phenyl-hydrazine were introduced firstly. The synthesis of nine dioxapyrrolino[3,4-c]pyrazoles containing chiral pyrazolyl moiety(6a-i) from 2 with N-substituted-phenylmaleimide by nonmetal oxidant IBD-initiated intermolecular 1,3-dipolarcycloaddition was described in detail.

第三章首先以5-[(1′S)-1′，2′-二乙酰氧基乙基]-1-苯基吡唑-3-醛(1)和苯肼为原料，合成了化合物5-(1′S)-1′，2′-二乙酰氧基乙基1-1-苯基吡唑-3-醛-苯腙(2)；再用化合物(2)与N-取代苯基马来酰亚胺反应，利用无金属氧化剂—IBD引发1，3-偶极反应，发生分子间的环加成，合成了9种新型手性吡唑连二氧代吡咯啉并

Synthesizc 2-methyl-5-acetamino benzene sulfochloride using p-toluidine primer reactant by aceylation and chlorosulfonation.

以对甲基苯胺为起始原料，通过乙酰化和氯磺化反应合成2-甲基－5-乙酰氨基苯磺酰氯。

Methods 2-(piperazin-1-yl)-1-(pyrrolidin-1-yl)ethanone (2) was synthesized from pyrrolidine via amidation and substitution, followed by treating with chloroacetyl chloride and triphenylphosphine in a "one pot" manner to give the corresponding phosphonium chloride 3 in a stable and pure form after crystallization from isopropanol.

以四氢吡咯为原料，先与氯乙酰氯成酰胺，再与哌嗪发生取代反应制得中间体［（1-四氢吡咯基）甲基］哌嗪(2)；化合物2与氯乙酰氯和三苯基膦反应，经异丙醇重结晶得到稳定的有机鏻盐(3)；化合物3与3，4，5-三甲氧基苯甲醛发生Wittig反应，再与马来酸成盐得目标化合物马来酸桂哌齐特(1)。

The resultedα-methylamine was protected by acetyl chloride, and then was chlorosulfonated bychlorosulforic acid at -5℃-0℃followed by treatment with aqueous ammonia givingcompound A in 52.3% yield.

甲基胺再用乙酰基进行保护后，以HSO3Cl为试剂进行氯磺化反应，再用浓氨水进行反应，制得了乙酰基保护的苯磺酰胺类化合物。

Cellulose benzoate,the degree of substitution of which was calculated from the content of C determined by element analysis,was prepared from microcrystalline celluloseand benzoyl chloride under heterogeneous condition and characterized by FT-IR and~1H-NMR.

研究了微晶纤维素和苯甲酰氯在多相条件下合成制备纤维素苯甲酸酯的反应，通过元素分析所得碳的质量百分含量计算了产物的取代度，并系统研究了吡啶与N，N-二甲基乙酰胺或与三乙胺混合反应溶剂、苯甲酰氯与纤维素羟基的摩尔比r、反应温度和反应时间对D S的影响，用FT-IR和1H-NM R对产物进行了表征。

Dihydropyrimidin-2 (1H)-ones were synthesized by condensation of aromatic or aliphatic aldehydes, urea and ethyl acetoacetate or acetylacetone one-pot three-component Biginelli condensation in the presence of room temperature ionic liquids as catalysts under solvent-free conditions.

5利用室温离子液体作催化剂，芳香或脂肪醛、尿素和乙酰乙酸乙酯或乙酰丙酮三组分缩合制备3，4-二氢嘧啶-2-酮衍生物。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。