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异丙胺

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The auxiliary can be recovered in high yield (81%) only by filtering and recrystallization. Besides, some other aldehydes have been chosen to test the enantioselectivity of N,N\'-dibenzyl tartamide, in comparison with two other allylaborates reagents developed previously by Roush and Brown, respectively. The results show that %e.e. of homoallylic alcohol is superior to that of the former, and approaches the Brown reagent.

产物经S_N2反应得瑞格列萘中间体-甲基烯丙基-2-氯苯基-叠氮甲烷(17);同时,将筛选出的新型手性配体N-苄基酒石酸二酰胺用于其他几种醛(正丁醛,异戊醛和环己醛)的不对称烯丙基化反应,并与广泛应用的Roush配体(22)和Brown配体(27)相比较,发现其立体选择性优于Roush配体,并接近Brown配体,但明显具有可回收利用的优势。

Three methods are used to prepare molecular imprinted polymers,which include conventional bulk technique or polymerization with ultraviolet initiated in low temperature and polymerization with silica-gel as sacrificial materials. In the polymerization procedure , Sulfamethazine(SM2)and Sulfisoxazole were used as target template molecules, methacrylic acid and 4-vinylpyridine(4-VP) and acrylamide were selected as functional monomers, ethylene glycol dimethacrylate as crosslinker, azobisisobutyronitrile was used as initator.

主要工作如下:首先,以磺胺异噁唑和磺胺二甲嘧啶为模板,分别以4-乙烯基吡啶,甲基丙烯酸,丙烯酰胺为功能单体,以二甲基丙烯酸乙二醇酯为交联剂,偶氮二异丁腈为引发剂,采用了传统方法(60℃恒温水浴)、牺牲硅胶法及低温紫外光聚合法等三种方法合成了一系列的磺胺类药物印迹聚合物。

2-Substituted-3,4-dihydro-1(2H)-isoquinolinones were synthesized from methyl 3-hydroxy-ben- zoates via allyl etherification, Claisen rearrangement, oxidation, reductive amination and aminolysis for the first time.

以3-羟基-4-甲氧基苯甲酸甲酯等为原料,通过烯丙基醚化、Claisen重排、氧化、与伯胺反应、还原、分子内酯的胺解六步反应合成了一系列2-取代-3,4-二氢-1-异喹啉酮类化合物。

Water,butylene glycol,cyclomethicone,VP/VA copolymer,glyceryl stearate,glycerin,ppg-15 stearyl ether,titanium dioxide,propylene glycol,cetyl alcohol,citrus aurantium dulcisfruit extract,saccharide isomerate,biosaccharide gum-1,ethoxydiglycol,peg-40 stearate,glycyrrhiza glabraroot extract,morus bombycis root extract,potassium cetyl phosphate,phenoxyethanol,c12-20 acid peg-8 ester,triethanolamine,prunus amygdalus dulcis oil,carbomer,caprylyl glycol,caffeine,disodium edta,methylparaben,chondrus crispus,butylparaben,iris germanica root extract,pentadecalactone,sodium polyacrylate,ethylparaben,sodium hyaluronate,peg-8,propylparaben,citric acid,chlorhexidine digluconate,tocopherol,ascorbyl palmitate,ascorbic acid

水,丁烯二醇,环甲硅脂,VP/VA共聚物,甘油基硬脂酸,甘油,ppg-15 stearyl ether,二氧化钛,丙二醇,十六烷基醇,橙子萃取物,天然异构寡糖, biosaccharde gum-1,乙基氧基乙二醇,聚乙二醇- 40硬脂酸,甘草根提取物,桑白皮根萃取,钾十六烷基磷酸盐,苯氧乙醇,c12-20 acid peg-8 ester,三乙醇胺,甜杏仁油,高分子胶,辛乙二醇,咖啡因,乙二胺四乙酸二钠,对羟基苯甲酸甲酯,卡拉胶,对羟基苯甲酸丁酯,鸢尾花根萃取, pentadecalactone ,聚丙烯酸钠,羟苯乙酯,透明质酸钠,聚乙二醇- 8,羟苯丙酯,柠檬酸,洗必泰葡萄糖酸盐,维生素E,维生素C棕榈酸酯,抗坏血酸

Water,c12-20 acid peg-8 ester,octyldodecanol,cetearyl isononanoate,butylene glycol,biosaccaride gum-1,peg-40 hydrogenated caster oil,ethylhexyl menthoxycinnamate,phenoxyethanol,potassium cetyl phosphate,macadamia ternifolia seed oil,dimethicone,carbomer,propylene glycol,glyceryl stearate,cocoglycerides,butyrospermum parkii,c12-13 alkyl lactate,methylparaben,benzophenone-3,pentadecalactone,sorbic acid,citrus aurantium dulcis oil,sodium hydroxyde,tocopheryl acetate,disodium edta,iris germanica root extract,retinyl palmitate,equisetum arvense extract,butylparaben,peg-8,propylparaben,ethylparaben,sodium hyaluronate,chlorhexidine digluconate,citrus aurantium amaraoil,tocopherol,ascorbyl palmitate,citric acid,ascorbic acid,limonene,linalool

水,c12-20 acid peg-8 ester,辛基十二烷醇,鲸蜡硬脂醇异壬酸酯,丁烯二醇,多醣物质,PEG-40氢化蓖麻油,4-甲氧基肉桂酸-2-乙基己基酯,苯氧乙醇,十六烷基磷酸钾,澳洲胡桃子油,地美司康,卡波姆,丙烯乙二醇,甘油硬脂酸,椰油脂酸甘油酯类,牛油果,c12-13烷醇乳酸酯,对羟基苯甲酸甲酯,二苯甲酮-3 ,环十五内酯,山梨酸,甜橙油,氢氧化钠,维生素E醋酸酯,乙二胺四乙酸二钠,鸢尾花萃取,维他命A酯,问荆萃取,对羟基苯甲酸丁酯,聚乙二醇- 8,羟苯丙酯,羟苯乙酯,透明质酸钠,洗必泰葡萄糖酸盐,苦橙油,维生素E ,维生素C棕榈酸酯,柠檬酸,抗坏血酸,柠檬精油,沉香醇水:几乎所有护肤品成分第一位都是水。辛基十二烷醇:界面活性剂、乳化剂、稠化剂,有一定刺激性

The separation of optical isomers of 2, 2'-dihydroxy-1, 1'-binaphthyl and 2, 2'-diamino-1, 1'-binaphthyl was studied by reversed-phase high performance liquid chromatography on a chiral stationary phase consisting of-hydroxypropyl-β-cyclodextrin (Cyclobond Ⅰ 2000 SP)using methanol/water as the mobile phase. The effects of mobile phase ratio, flow rate and column temperature on separation of optical isomers of DHBN and DABN were investigated.

在S-羟丙基-β-环糊精手性柱(CyclobondⅠ2000 SP)上用反相高效液相色谱法研究了2,2'-二氨基-1,1'-联萘和2,2'-二羟基-1,1'-联萘光学异构体的分离,考察了流动相组成、流速以及柱温等对联二萘胺和联二萘酚光学异构体分离的影响。

With toluene two isocyanogen diethylene glycol dinitrate, the polyester or the polyether dihydroxy alcohol, two methylol propionic acid, the triethylamine, the ethylene diamine and so on are raw materials, uses the prepolymer dispersion method, has prepared a series of anion river character polyurethane emulsion.

用甲苯二异氰酸酯、聚酯或聚醚二元醇、二羟甲基丙酸、三乙胺、乙二胺等为原料,采用预聚物分散法,制备了一系列的阴离子水性聚氨酯乳液。

It is found that the stereochemistry of the reactions of telluronium allylide,crotonylide and trimethylsilyallylide with α,β-unsaturated esters and amides can be tuned by thechoice of reaction conditions.

利用反应条件的变化首次实现了烯丙基、巴豆基、含硅烯丙基碲叶立德与α,β-不饱和酯、酰胺进行环丙烷反应的立体化学调控,能高立体选择性地、高效率地合成两种不同几何异构体中的一个。

Acrylamio-2-methyl propane sulfonic acid is applied in the production of water-based latex,which copolymerizes with acrylic acid,styrene or vinyl acetate to turn out latex resin.

2-丙烯酰胺基-2-甲基丙磺酸应用于水基性胶乳的生产过程中,与丙烯酸、苯乙烯或醋酸乙烯发生异分子聚合而生成胶乳树脂。

A novel polymeric organic thermal stabilizer for PVC was designed and synthesized by acryloylthiourea grafting on polystyrene which was nitrified by HNO3 and then reducted by Sn powder to amine.

以经部分硝化和还原的低分子量聚苯乙烯为母链,利用其胺基和丙烯酰基异硫氰酸酯加成,合成了一种新型有机高分子型PVC 热稳定剂——丙烯酰基硫脲接枝聚苯乙烯,其结构经IR和元素分析表征。

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Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气,收缩臀部肌肉;拱起身体,尽量抬起头来,右腿伸直朝向天花板(膝微屈,以避免肌肉紧张)。

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However, to get a true quote, you will need to provide detailed personal and financial information.

然而,要让一个真正的引用,你需要提供详细的个人和财务信息。