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ATRP initiation systems consist of organic chloride initiators (RCl, RBr or aryl sulfonyl chloride, etc.), transition-metal catalysts in lower oxidation state Cu(I, Fe, Ru, Ni, etc. and organic electronic-donating ligands (2,2'-bipyridine―bipy or bpy, PPh3, multidentate ligand compound 1,1,4,7,7-pentamethyldiethylenetriamine, etc.).

普通ATRP引发体系包括引发剂主要为氯或溴化物,芳基磺酰氯;低价过渡金属卤化物如Cu, Fe,Ru,Ni等;有机配体如2,2'-联吡啶,PPh3,脂肪族多元胺等。

Phenylmethylsulfonyl fluoride (174.2 mg/mL), chicken ovomucoid (1000 mg/mL) and soy-bean trypsin inhibitor (1000 mg/mL) could inhibit enzyme activity, which indicated that the enzyme belonged to serine protease group. On plasminogen-free fibrin plates and plasminogen fibrin plates, the fibrinolytic activity had no obvious difference, indicating that the enzyme was a fibrinolytic enzyme which degraded fibrin directly, but not a plasminogen activator which degraded fibrin by activating plasminogen.

此菌株产生的纤溶酶在50℃以下和pH5.0~11.0范围内具有较好的稳定性,最适作用温度为42℃;最适pH值为9.0;Mg2+、Ca2+对此酶有明显的激活作用,而Cu2+能完全抑制酶的活性;174.2 mg/mL的苯甲基磺酰氟、1000 mg/mL的鸡卵类粘蛋白和1000 mg/mL大豆胰蛋白酶抑制剂能完全抑制酶活性,初步说明此酶属于丝氨酸蛋白酶类;体外溶纤作用表明,该酶溶解纤维蛋白的方式是直接溶解,而不是通过激活纤溶酶原。

The derivatives of phenylsulfonyl phosphonate containingselenomorpholine were synthesized by Michaelis-Becker reaction and N-seleno-morpholinyl alkylphosphonates were formed by Mannich reaction.

研究了中间体硒代吗啉、苯并异硒唑酮及目标化合物的合成条件,利用Michaelis-Becker反应合成了一类硒代吗啉磺酰胺膦酸酯衍生物,利用Mannich反应合成了N-硒代吗啉基烷基膦酸酯衍生物。

Synthesis of α-(p-Toluenesulfonamido)-Phosphonic Acid Derivatives and Phosphonopeptides and Their Biologic Activity PH.D.

为寻找高效选择性除草剂,我们设计、合成了新型含磺酰基α-氨基膦酸和膦肽衍生物共96个,并研究了有关的化学反应。

We screened a set of Lewis base organocatalysts derived from chiral pipecolinic acid and tert-butanesulfinamide for the reduction of-N-Cbz-1- phenylpropenamine, including newly designed ones and some of those previously developed in our lab. However, only moderate stereoselectivities, albeit high yields were obtained.

在本课题组前期研究的基础上,我们筛选并设计了一系列以手性哌啶酸和叔丁基亚磺酰胺为母体的有机小分子路易斯碱催化剂,它们能催化三氯氢硅对-N-苄氧羰基-1-苯基丙烯胺的不对称还原,获得很高的收率和中等的对映选择性,并且具有很好的底物普适性。

Propargyl alcohol was protected by dihydrophran with the catalysis of PPTS ,and then reacted with Ethyl Mag bromide to prepare its corresponding Grignard reagent.

炔丙醇在 PPTS 催化下由二氢吡喃保护,与溴乙烷格氏试剂反应生成相应的格氏试剂,然后与氯甲酸甲酯反应得到羟基丁炔酸甲酯四氢吡喃醚,在 PPTS 催化下脱保护后进行甲磺酰化,由溴化钠进行溴取代后合成了4-溴-2-丁炔酸甲酯,总收率达53%。

And the corresponding chiral tertiary propargylic alcohols were obtained with enantiomeric excesses of up to 86%, which provided a simple, practical and inexpensive method to generate chiral tertiary propargylic alcohols.

经过筛选、测试,发现一β-磺酰胺基醇-钛复合物可在温和条件下,有效促进炔基锌对简单非活化酮的不对称加成,并且得到相应的手性三级炔丙醇,ee值达到了86%。

This thesis mainly focuses on overcoming the substrates limition of the present catalytic systems,low catalytic efficiency,and application in total synthesis.1.Conveniently synthesized sulfonamide alcohol titanium complex has been used to catalyze the asymmetric addtition of methyl propiolate to various aromatic and aliphatic aldehydes with high enantioselectivity.

本论文即针对现有催化体系的底物局限性、催化效率低、应用研究少等展开研究:1、我们将简便合成的磺酰胺基醇配体-钛催化体系应用于催化丙炔酸甲酯对各类芳香醛及脂肪醛的不对称加成取得了理想的结果。

The control rate of Sagittaria pygmaea Miq. was better when compared the mixture application of sulfonylurea herbicide of londax plus urea with londax applied alone.

除草剂和尿素混用的杀草增效作用:磺酰脲类除草剂农得时+尿素混用对矮慈姑的鲜重抑制率显著高于农得时单用。

The antiarrhythmic drug ibutilide fumarate was synthesized from aniline by methylsulfonylation, Friedel Crafts reaction, condensation, reduction and salification with an overall yield of 44%.

以苯胺为起始原料,经甲磺酰化、傅克反应、缩合、还原和成盐反应等 5步合成了抗心律失常药富马酸伊布利特,总收率 4 4 %。

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