氨基乙酸

In our research on study chemical reaction of active methylene compounds and brom-acetophenone. Because of brom-acetophenone is compound that contain carbonyl and halogen ,which will take place electrophilic substitution and nucleophilic addition. When active methylene compounds are ethyl acetoacetate and β-diketone, controlling reaction condition, we have found that mono-substitution's production and di-substitution's. production is isolated; active methylene compounds are acetoacetanilide and acetoacetanilide derivate, pyrrolidin-2-one derivants were obtained by substitution and close-ring reaction .but there is no report about it.

本文是让活泼亚甲基类化合物与溴代苯乙酮发生化学反应，由于溴代苯乙酮是含有羰基的卤代烃结构，它可以发生亲电取代和亲核加成反应，当活泼亚甲基类化合物为乙酰乙酸乙酯和β-二酮时，控制反应条件可以发生单取代和双取代两种产物；当活泼亚甲基类化合物为乙酰乙酰芳胺类化合物来反应时，溴代苯乙酮中的羰基与氨基会发生分子内的关环反应生成吡咯烷-2-酮衍生物，这在以前的研究中是没有发现的。

At present, the output of hydrocyanic acid produced as a by-product in production of acylonitrile is reached 100000t/a, a suggestion is offered on producing iminodiacetic acid by direct synthesis based on hydrocyanic acid for those enterprises having advantage in hydrocyanic acid resource.

目前国内在生产丙烯腈过程中每年副产氢氰酸10万t，有原料优势的企业采用氢氰酸直接合成法工艺生产亚氨基二乙酸。

Owing to phosphorous acid is produced from phosphorus trichloride in industry by hydrolysts, inspissation and crystallization, if we use phosphorus trichloride directly on synthesize N- iminodiacetic acid, not only can simplify operation, but also can red.

原工艺采用的是在酸性条件下高温时将甲醛滴加到亚磷酸与亚氨基二乙酸一钠盐混合溶液中进行反应，考虑到工业上亚磷酸的合成一般采用三氯化磷水解、提浓、结晶制得，直接将三氯化磷用于双甘膦的合成，不仅可以简化操作过程，而且对于降低生产成本和能耗有明显意义。

Originally techniques dropped formaldehyde into the mixture of phosphorous acid and monosodium of imino diacetic acid in high temperature. Owing to phosphorous acid is produced from phosphorus trichloride in industry by hydrolysis, inspissation and crystallization, if we use phosphoros trichloride directly on synthesize N- iminodiacetic acid, not only can simplify operation, but also can reduce the cost and save energy.

原工艺采用的是在酸性条件下高温时将甲醛滴加到亚磷酸与亚氨基二乙酸一钠盐混合溶液中进行反应，考虑到工业上亚磷酸的合成一般采用三氯化磷水解、提浓、结晶制得，直接将三氯化磷用于双甘膦的合成，不仅可以简化操作过程，而且对于降低生产成本和能耗有明显意义。

The leaves, leafstalk, and stems from grapes were used as explants to induce calli and subculture in medium (100 mL B5 medium containing 3 g sucrose and 0.6 g agar) with different plant hormone combinations (6-BA, KT, IBA, 2, 4-D), and then the resveratol content from those calli was determinated by using HPLC.

以葡萄的叶、叶柄和茎分别作为外植体，在不同激素组合（6-卞氨基嘌呤(6-BA)、激动素、吲哚丁酸、2，4-二氯苯氧乙酸(2，4-D)）的培养基（以B5培养基为基本培养基，含30g/L蔗糖和6g/L琼脂）上，进行愈伤组织的诱导和继代培养，并利用高效液相色谱法对不同来源愈伤组织中的白藜芦醇含量进行测定。

Naphthyl aceate was synthesized with acetic anhydride and naphthol using aminosulfonic acid as catalyst.

以氨基磺酸为催化剂，用乙酸酐和β-萘酚合成了乙酸β萘酯。

A series of 3-naphthyl-2--1,3-thiazolidin-4-ones were synthesized by the three-component one-pot cyclocondensation of naphthylamine, aromatic aldehyde and 2-mercaptoacetic acid using a microwave-assisted method in the presence of DMAP/DCC.

利用微波促进的多组分一锅法，在封管条件下，以萘胺、芳醛和巯基乙酸为原料，4-二甲氨基吡啶/N，N'-二环已基碳二亚胺为催化剂，合成了系列新的噻唑烷酮衍生物，该反应具有时间短、操作简便等优点。

Like thionamic acid, alkyl benzene sulfonic acid, nonyl phenol oxygen ethylene ether, ethylene diamine four ethanoic acid two sodium, oxalic acid, deionized water and so on.

如氨基磺酸、烷基苯磺酸、壬基酚氧乙烯醚、乙二胺四乙酸二钠、草酸、去离子水等。

The method is raw material with pyrimidine of 5- fluorine make water, after reacting with chloric second acid below the intention that changes potassium in oxyhydrogen, with complex intermediate body 2- amino - 5- is replaced - 1, 3, 2 Zun reaction makes 4- Sai target content, evaluate its to fight tumor active.

方法以5-氟尿嘧啶为原料，在氢氧化钾的功能下和氯乙酸反应后，和合成的中间体2-氨基-5-取代-1，3，4-噻二唑反应制得目标物，并评价其抗肿瘤活性。

Our results showed that LMWH at the concentrations of 16000and 8000 u·L(-1) could significantly (P.01, P.05 vs vehicle) inhibit constriction of isolated ileumsmooth muscle of ovalbumin-sensitized guinea pigs induced by OA in vitro, LMWH 200, 50and 12.5 u·kg(-1) ip could markedly (P.01 vs vehicle) inhibit degranulation of Pericranium MC inrats, LMWH 60 and 30 u·kg(-1) ip could significantly (P.01, P.05 vs vehicle) depress the lickingresponse induced by 4-aminopridine and the increasing of capillary permeability induced by aceticacid in mice.

研究结果显示，LMWH16000u·L(-1)（P＜0.01）和8000u·L(-1)（P＜0.05）均能显著降低OA所致的致敏豚鼠离体回肠平滑肌收缩高度；LMWH200u·kg(-1)，50u·kg(-1)和12.5u·kg(-1)（P＜0.01）均能明显抑制颅骨骨膜肥大细胞脱颗粒；LMWH60u·kg(-1)（P＜0.01）和30u·kg（P＜0.05）均能显著减少个氨基毗陡诱发的小鼠舔体反应次数，并能抑制冰乙酸所致的小鼠毛细血管通透性增加。

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。