甲基乙二醛

Study on catalytic synthesis of n-butyl cinnamate with lanthanum methanesulfonate

以正辛醛和乙二醇为原料，甲基磺酸镧为催化剂，合成了正辛醛缩乙二醇。

Mission:"equality and mutual benefit, reputation first, unity and cooperation and friendship between the long-term" supply products: ethylenediamine; diethylamide; triethylamine; Diethylenetriamine; three ethylene diamine; three ethylene amines 40; 40 Five ethylene amines; five ethylene amines 6; caprolactam; DMF; allyl amine; N, N dimethylaniline; propylamine; are butylamine; are TOA; 3 Poly Cyanamide; 1,2 c diamine; ethanolamine; diethanolamine, triethanolamine; potassium iodide, potassium hydroxide, potassium permanganate, toluene, xylene, toluene of chlorine ; Acetone, butanone; acetylacetone; ethyl acetate, butyl acetate; Y-butyrolactone; DMC; acetyl of methyl acetate; Sanfu acetyl acid; Sanfu acetyl B Ethyl; methanol, ethanol, isopropanol; propylene glycol; glycerol; propargyl alcohol; 1.3 propylene glycol; xylitol; acetic acid; have acid; mercaptoacetic acid; vary Bitterness; adipic acid; trifluoroacetic acid; oxalic acid, the amino acid; o-amygdalin acid; DL-Acid; anhydrous piperazine; six non-piperazine, furfural, castor oil, ethylene Aldehyde; glutaraldehyde, multi-POM; isopropyl ether; anisole; tetrahydropyrrole; pure pyridine; 1.2 dichloroethane; methylene chloride, chloroform, carbon tetrachloride; hydrazine hydrate; Nonylphenol;-m-cresol; Se phenol; phenol; the tert-butyl phenol; Titanium Dioxide; iron; full Tangfen; Bisphenol A; azo two different nitrile; sodium azide; sodium carbonate ; Sodium chloride; iron oxide; cuprous chloride; thionyl chloride; D4; sodium bicarbonate; ammonia, potassium chloride; anhydrous sodium sulphite; ammonium persulfate; glycol Dingmi; B Glycol ether; calcium chloride; cyclohexanone; cyclohexane, methyl tertiary butyl ether, potassium carbonate, ferric chloride, potassium nitrate; Linsuansanna; zinc oxide; sodium nitrite; antimony oxide; Tartrate; OP-10; TX-10; tablets base; AES; sodium benzoate, sodium citrate; partial sodium silicate, sodium perborate, a sodium carbonate, sodium benzene; Asia sodium chlorate; Wuluo Care products; urea; hydrochloric acid, sulfuric acid, lactic acid; amino acid, hydrogen peroxide, ammonium bicarbonate

公司宗旨："平等互利，信誉至上，团结合作，友谊长久"乙二胺；二乙胺；三乙胺；二乙烯三胺；三乙烯二胺；三乙烯四胺；四乙烯五胺；五乙烯六胺；己内酰胺；二甲基甲酰胺；烯丙基胺；N，N二甲基苯胺；正丙胺；正丁胺；正辛胺；三聚氰胺；1，2丙二胺；一乙醇胺；二乙醇胺；三乙醇胺；碘化钾；氢氧化钾；高锰酸钾；甲苯；二甲苯；对氯甲苯；丙酮；丁酮；乙酰丙酮；醋酸乙酯；醋酸丁酯；Y-丁内酯；碳酸二甲酯；乙酰乙酸甲酯；三伏乙酰乙酸；三伏乙酰乙酸乙酯；甲醇；无水乙醇；异丙醇；丙二醇；丙三醇；丙炔醇；1.3丙二醇；木糖醇；冰醋酸；己醛酸；巯基乙酸；异辛酸；己二酸；三氟乙酸；乙二酸；对氨基苯乙酸；邻氯苦杏仁酸；DL-扁桃酸；无水哌嗪；六无哌嗪；糠醛；蓖麻油；乙二醛；戊二醛；多聚甲醛；异丙醚；苯甲醚；四氢吡咯；纯吡啶；1.2二氯乙烷；二氯甲烷；三氯甲烷；四氯化碳；水合肼；壬基酚；纯间甲酚；硒酚；苯酚；对叔丁基苯酚；钛白粉；铁粉；全糖粉；双酚A；偶氮二异丁腈；叠氮化钠；碳酸钠；氯化钠；三氧化二铁；氯化亚铜；氯化亚砜；D4；碳酸氢钠；氨水；氯化钾；无水亚硫酸钠；过硫酸铵；乙二醇丁醚；乙二醇乙醚；氯化钙；环己酮；环己烷；甲基叔丁基醚；碳酸钾；三氯化铁；硝酸钾；磷酸三钠；氧化锌；亚硝酸钠；氧化锑；酒石酸；OP-10；TX-10；粒碱；AES；苯甲酸钠；柠檬酸钠；偏硅酸钠；过硼酸钠；过碳酸钠；苯磺酸钠；亚氯酸钠；乌洛托品；尿素；盐酸；硫酸；乳酸；氨基磺酸；双氧水；碳酸氢铵

Vanillin 58 was used as starting material, which underwent methylation, bromination, acetalization, lithiation followed by nucleophlic addition to aldehyde, Diels-Alder reaction, selective reduction and lactonization to produce diphyllin in an overall yield of 38%(7 steps).

这个方法从香兰素58开始，经过甲基化、溴化、成乙二醇缩醛反应、锂化而后对醛亲核加成、Diels-Alder反应、选择性还原反应和内酯化反应共7步，最后得到diphyllin，总产率38％。

Water,butylene glycol,glycerin,glyceryl polymethacrylate,triethanolamine,carbomer,ppg-26-bueth-26,chondrus crispus,peg-40 hydrogenated castor oil,phenoxyethanol,imidazolidinyl urea,propylene glycol,benzophenone-4,retinyl palmitate,citrus aurantiudulcisoil,phospholipids,methylparaben,tocopheryl acetate,c12-23 alkyl lactate,disodium EDTA,centella asiatica extract,iris germanica root extract,pentadecalactone,aloe barbadensis leaf juice,mimosa tenuiflora bark extract,sodium hyaluronate,menthol,biosaccharide gum-1,citrus aurantium amara oil,propylparaben,methylchloroisothiazolinone,sodium benzoate,potassium sorbate,citric acid,calcium sorbate,methylisothiazolinone,butylparaben,ethylparaben,yellow 5(CI 19140),limonene,linalool

水，丁二醇，甘油，甘油聚甲基丙烯酸酯，三乙醇胺，卡波姆，PPG-26-丁醇聚醚-26，鹿角菜胶，PEG-40 氢化蓖麻油，苯氧乙醇，尿素醛，丙二醇，二苯酮-4，维他命A酯，甜橙油，磷脂质，羟苯甲酯，醋酸盐维他命E，C12-13 烷醇乳酸酯，乙二胺四乙基二钠，雷公根萃取，鸢尾花根萃取，环十五内酯，吉拉索芦荟叶汁，含羞草萃取，透明质酸钠，薄荷脑，多醣物质，苦橙油，羟苯丙酯，甲基氯异塞唑晽酮，苯甲酸钠，山梨酸钾，柠檬酸，山梨酸钙，甲基异噻唑啉酮，羟苯丁酯，羟苯乙酯，柠檬黄，柠檬精油，沈香醇水：几乎所有护肤品成分第一位都是水。丁二醇：保湿剂及溶剂，质地温和

Mission:"equality and mutual benefit, reputation first, unity and cooperation and friendship between the long-term" supply products: ethylenediamine; diethylamide; triethylamine; Diethylenetriamine; three ethylene diamine; three ethylene amines 40; 40 Five ethylene amines; five ethylene amines 6; caprolactam; DMF; allyl amine; N, N dimethylaniline; propylamine; are butylamine; are TOA; 3 Poly Cyanamide; 1,2 c diamine; ethanolamine; diethanolamine, triethanolamine; potassium iodide, potassium hydroxide, potassium permanganate, toluene, xylene, toluene of chlorine ; Acetone, butanone; acetylacetone; ethyl acetate, butyl acetate; Y-butyrolactone; DMC; acetyl of methyl acetate; Sanfu acetyl acid; Sanfu acetyl B Ethyl; methanol, ethanol, isopropanol; propylene glycol; glycerol; propargyl alcohol; 1.3 propylene glycol; xylitol; acetic acid; have acid; mercaptoacetic acid; vary Bitterness; adipic acid; trifluoroacetic acid; oxalic acid, the amino acid; o-amygdalin acid; DL-Acid; anhydrous piperazine; six non-piperazine, furfural, castor oil, ethylene Aldehyde; glutaraldehyde, multi-POM; isopropyl ether; anisole; tetrahydropyrrole; pure pyridine; 1.2 dichloroethane; methylene chloride, chloroform, carbon tetrachloride; hydrazine hydrate; Nonylphenol;-m-cresol; Se phenol; phenol; the tert-butyl phenol; Titanium Dioxide; iron; full Tangfen; Bisphenol A; azo two different nitrile; sodium azide; sodium carbonate ; Sodium chloride; iron oxide; cuprous chloride; thionyl chloride; D4; sodium bicarbonate; ammonia, potassium chloride; anhydrous sodium sulphite; ammonium persulfate; glycol Dingmi; B Glycol ether; calcium chloride; cyclohexanone; cyclohexane, methyl tertiary butyl ether, potassium carbonate, ferric chloride, potassium nitrate; Linsuansanna; zinc oxide; sodium nitrite; antimony oxide; Tartrate; OP-10; TX-10; tablets base; AES; sodium benzoate, sodium citrate; partial sodium silicate, sodium perborate, a sodium carbonate, sodium benzene; Asia sodium chlorate; Wuluo Care products; urea; hydrochloric acid, sulfuric acid, lactic acid; amino acid, hydrogen peroxide, ammonium bicarbonate

公司宗旨：&平等互利，信誉至上，团结合作，友谊长久&乙二胺；二乙胺；三乙胺；二乙烯三胺；三乙烯二胺；三乙烯四胺；四乙烯五胺；五乙烯六胺；己内酰胺；二甲基甲酰胺；烯丙基胺；N，N二甲基苯胺；正丙胺；正丁胺；正辛胺；三聚氰胺；1，2丙二胺；一乙醇胺；二乙醇胺；三乙醇胺；碘化钾；氢氧化钾；高锰酸钾；甲苯；二甲苯；对氯甲苯；丙酮；丁酮；乙酰丙酮；醋酸乙酯；醋酸丁酯；Y-丁内酯；碳酸二甲酯；乙酰乙酸甲酯；三伏乙酰乙酸；三伏乙酰乙酸乙酯；甲醇；无水乙醇；异丙醇；丙二醇；丙三醇；丙炔醇；1.3丙二醇；木糖醇；冰醋酸；己醛酸；巯基乙酸；异辛酸；己二酸；三氟乙酸；乙二酸；对氨基苯乙酸；邻氯苦杏仁酸；DL-扁桃酸；无水哌嗪；六无哌嗪；糠醛；蓖麻油；乙二醛；戊二醛；多聚甲醛；异丙醚；苯甲醚；四氢吡咯；纯吡啶；1.2二氯乙烷；二氯甲烷；三氯甲烷；四氯化碳；水合肼；壬基酚；纯间甲酚；硒酚；苯酚；对叔丁基苯酚；钛白粉；铁粉；全糖粉；双酚A；偶氮二异丁腈；叠氮化钠；碳酸钠；氯化钠；三氧化二铁；氯化亚铜；氯化亚砜；D4；碳酸氢钠；氨水；氯化钾；无水亚硫酸钠；过硫酸铵；乙二醇丁醚；乙二醇乙醚；氯化钙；环己酮；环己烷；甲基叔丁基醚；碳酸钾；三氯化铁；硝酸钾；磷酸三钠；氧化锌；亚硝酸钠；氧化锑；酒石酸；OP-10；TX-10；粒碱；AES；苯甲酸钠；柠檬酸钠；偏硅酸钠；过硼酸钠；过碳酸钠；苯磺酸钠；亚氯酸钠；乌洛托品；尿素；盐酸；硫酸；乳酸；氨基磺酸；双氧水；碳酸氢铵

Aqua, Sorbitol, PPG-1 PEG-9 Lauryl glycol ether, Hydrolyzed elastin, Hydrolyzed wheat gluten, Hydrolyzed collagen, Hydrolyzed glycosamino-glycans, Humulus lupulus, Propylene glycol, Triethanolamine, Sodium hydroxide, Carbomer, Maris limus extract, Ostrea extract, Imidazolidinyl urea, Parfum, Benzyl salicylate, Coumarin, Alpha isomethyl ionone, Hexyl cinnamal, Buthylphenylmethylpropionate, Linalol, Methylisothiazolinone, Methylchloroisothiazolinone.

水，山梨醇， PPG 公司- 1聚乙二醇- 9十二烷基醇醚，水解弹性蛋白，水解小麦面筋蛋白，水解胶原蛋白水解粘多糖，多聚糖，啤酒花提取物花，丙二醇，三乙醇胺，氢氧化钠，卡波姆，马里斯提取物，牡蛎提取物，咪唑烷基脲，香水，水杨酸苄酯，香豆素，阿尔法 l 紫罗兰酮，己基肉桂醛，丁苯基甲基丙醛，芳樟醇，甲基异噻唑啉酮，甲基氯异塞唑晽酮。

The Nobel Laureate Albert Sczent Georgyi has carried out a number of experiments testing the effect of methyl glyoxal, a constituent of urine, on cancer patients, and has had considerable success in several cases.

诺贝尔奖获得者 Albert Sczent Georgyi 进行了一些试验测试甲基乙二醛的作用，是尿中的一种组分，在癌症病人，并在几种病例获得重要成功。

A strain producing 2-oxoaldehyde reductase was isolated from LB culture medium containing methylglyoxal. By analyzing its physiological and biochemical characters, and 16S rDNA sequence, it was identified as S. maltophilia and named as Stenotrophomonas inaltophilia YL.

用含甲基乙二醛的LB培养基平板筛选到1株能代谢甲基乙二醛的细菌，通过对克隆到的16S rDNA基因序列比对及生理生化实验，将其鉴定为嗜麦芽寡养单胞菌，命名为Stenotrophomonas maltophilia YL。

Raw enzyme was extracted after the bacteria were ultrasonically broken, and its 2-oxoalde-hyde reductase activity was detected by HPLC and UV absorbency spectrum in the presence of NADH and methylglyoxal as a substrate.

破碎该菌细胞后提取粗酶，以甲基乙二醛作反应底物，在还原性辅酶Ⅰ存在条件下，紫外光谱和HPLC的分析表明，该菌能代谢甲基乙二醛；并对其产酶条件进行了研究。

The main gluconeogenic precursor in kidney is thought to be lactate; however, less is emphasized enantiomerically. L-lactate is a glycolysis end-product, but D-lactate is formed after detoxification of methylglyoxal, which is the main source of advanced glycation end-products.

乳酸为肾脏糖质新生的主要来源，其含有一不对称碳，故具有D-、L-乳酸两种镜相异构物，而D-、L-乳酸两者之生成相当不同，L-乳酸是糖解作用之终产物，D-乳酸为体内一醣化终产物(advanced glycation end-products)─甲基乙二醛进行去毒化反应所生成，目前缺乏对乳酸镜像异构物与肾脏糖质新生间相关的探讨。

Now, however, all children continue in "comprehensive" schools, and the eleven-plus determines which courses of study the child will follow.

然而现在，所有的孩子都要在综合学校继续学习，所以这次考试只是决定他们将要学习哪些课程。

Cultivatable land , and led to a general recognition that development must not be carried at the cost of agriculture .

城区的迅速扩大在很多情况下侵占了宝贵的可耕地，使人们普遍认识到发展不能以牺牲农业为代价。