酰氧基

A novel Pd／C catalyst with high activity,high selectivity and good stability developed by our group was used for the hydrogenation of N-（3-nitro-4-methoxyphenyl）acetamide into N-（3-amino-4-methoxyphenyl）acetamide in methanol and water,respectively.

笔者开发了一种高效的Pd／C催化剂，分别选用甲醇和水作为反应溶剂，实现了高活性、高选择性和高稳定性地催化加氢制备N-（3-氨基-4-甲氧基苯基）乙酰胺。

Based on the possible degradation products, Microbial degradation pathways of metsulfuron-methyl is concluded as follows: after the cleavage of the sulfonylurea bridge, 2-amino-4-methoxy-6-methyl-triazine is demethylated and the annularity reaction of sulphanilamide occurs.

甲磺隆主要降解途径首先是脲桥的断裂，然后6-甲氧基-4-甲基-2-氨基-三氮嗪进一步脱甲基，而磺酰胺类物质将进一步脱氨基环化。

A new photoinitiator, 4-phenoxy benzophenone, was synthesized and characterized using diphenyl ether and benzoyl chloride as raw material.

以二苯醚与苯甲酰氯为原料，合成了一种新型的激光光敏刺——4-苯氧基二苯甲酮。

METHODS The target compound was synthesized from 3,4-dimethoxyphenylacetic acid via halogenation, acylation, cyclization, alkylation and iodine substitution reaction.

以3，4-二甲氧基苯乙酸为原料，经卤化、酰化、环合、烷基化、碘取代等反应制得目标化合物。

SCE for dihydroartemisininoxy benzoic acid hydrazide at Ag electrode BR buffer solution containing 20% ethanol(V/V, pH 7.2) using electroanalytical chemistry method.

在含20%乙醇的BR缓冲溶液（V/V， pH＝7.2）中，利用电分析化学方法测得双氢青蒿素氧基苯甲酰肼(dihydroartemisininoxy benzoic acid hydrazide， DBAH)在银电极上于－0.66 V

However, in the case of TsN〓 withsilyl ketene acetals, an unexpected alkoxy migration occurred.

而且在研究对甲苯磺酰叠氮和silyl ketene acetals的对比反应中，我们还发现了烷氧基迁移的现象。

The synthesis of nalbuphine hydrochloride from thebaine as starting material was through following processes:oxidation,high-pressure hydrogenation,acetylation,removing methyl of 3-methoxy,hydrolysis,condensation,reduction and finial salification.

以蒂巴因为起始原料，经氧化、高压氢化、乙酰化、氰化、脱3-位甲氧基的甲基、水解、缩合、还原、成盐，合成了盐酸纳布啡，总收率达18。

Copolymers with the naphthoyimine chromophores were firstly obtained through Pd-catalyzed Heck reaction. The copolymers had good solubility in common solvents due to the presence of alkoxyl substituents in the molecular chains.

在钯催化下利用Heck耦合反应制备了以萘酰亚胺为发色团的共聚物，通过侧链上引入丁氧基醚链，使得聚合物具有很好的溶解度，能溶解在常用有机溶剂中。

METHODSThe compounds were prepared by using 2ethylpyridine, through the Whol Ziegler reaction, the Williamson reaction and aminolysis. The effects for ability of memory in mice were measured by swimming maze test.

方法］以2乙基吡啶为原料，经WholZiegler反应、Williamson反应及氨解反应得到2［1（2吡啶）乙氧基］乙酰4取代哌嗪，采用水迷宫法观察所合成的化合物对小鼠记忆力的影响。

Rizaben ; N -（3; 4 - dimethoxycinnamoyl）- anthranilic acid ; compounded solvent ; synthesis

曲尼司特； N-（3； 4-二甲氧基肉桂酰）；邻氨基苯甲酸；复合溶剂；合成

By the time of its fall, most of the prisoners were writers who had written against the corruptions of the government.

到它被攻陷的时候，里面多数的犯人是写了反对政府贪污文章的作家。

The most obvious variation to ovum morphological character was that the color was changed from light green to sepiaceous in embryonic development, and all the ovums were almost hatched after 96h.

在胚胎发育过程中卵的形态特征最明显的变化是颜色从淡绿到深褐色，卵在发育96h后卵基本全部孵化。