查询词典 methyl-glyoxal

Benzoin condensation using imidazolium based ionic liquids as solvent for the first time has been successfully achieved. The reaction conditions have been studied in detail. When under 65 and with 0.5 equiv. NaOH in ionic liquid l-butyl-3-methyl-imidazolium tetraborate, benzoin was obtained in excellent yield of 91%. Recycling of ionic liquid has been available.

首次探索并成功实现了在咪唑鎓盐离子液体中进行苯偶姻缩合反应，详细探讨了反应条件，当反应在65℃下和0.5当量NaOH存在下以及在离子液体4-丁基-1-甲基咪唑鎓四氟硼酸盐中进行时，苯偶姻产率可达91％；并对离子液体进行了有效回收再利用。

The title compound (C21H15N5O) was obtained by the reaction of 3-methyl-1-phenyl-1H-pyrazol-5(4H)-one and 4-(2,2-dicyanovinyl)benzonitrile in water in the presence of TEBA and by recrystallization from EtOH(95%) and DMF.

水溶剂中，在三乙基苄基氯化铵存在下，由3-甲基－1-苯基－1H-吡唑－5(4H)-酮和4-（2，2-二氰基）苯基氰合成并经N，N-二甲基甲酰胺与95%乙醇的混合溶剂重结晶得到化合物C21H15N5O的晶体。

The optimal separating condition of chromatography analysis was: Shimadzu VP-ODS 150mm4.6mm as chromatographic column; acetonitrile/water (12/88,V/V, Contained 1.25mmol/l phosphoric acid) as mobile phase with flow rate of 1.0ml/min. Macroporous ion exchange resins and activated carbon were applied to enrich the trace level impurities and the main impurities was determined by LC-MS and GC-MS.They were : Benzonitrile , 2-Methyl-8-hydroxyquinoline, 2,6-Pyridinediamine , O-ethyloxime Cyclo-hexanone and compound with 220 molecular weight .

采用离子树脂和活性炭吸附富集这些微量的杂质，并通过液质联用和气质联用对杂质进行了定性分析，鉴定了影响290nm吸收的主要杂质为苯甲腈，2甲基-8羟基喹啉，2，6二氨基吡啶，O-乙基环己酮肟和分子量220的物质。

Hydroxy-2-methyl-1-phenyl propan-1-one (1173) was a more effective photoinitiator to these monomers than that of benzophenone.

与二苯甲酮相比，2-羟基－2-甲基－1-苯基丙酮(1173)对两种单体具有较好的引发效果。

Results Benzyl cinnamate, benzyl benzoate and borneol were found in vitro of rabbits, 2-hydroxy-methyl benzoate and borneol were found in vivo of rabbits.

结果 体外药物成分含有肉桂酸苄醋、苯甲酸苄酯、冰片等；体内药物成分含有2-羟基苯甲酸甲酯、冰片等。

The HPLC finger print of TGDGBX was set up by HPLC-DAD: the chromatographic column,Diamonsil C18(250 mm×4.6 mm, 5μm, 30℃)and bidimensional gradient elution using methyl cyanide-water (flowing speed 1.0 mL·min-1,λ=203 nm). 180 Wistar rats were randomly divided into normal control group, model group, cortisone group, and TGDGBX (16,32 and 64 mg·kg-1) groups respectively.

采用HPLC-DAD，Diamonsil C18色谱柱(250 mm×4.6 mm， 5μm)，乙腈―水二元梯度洗脱，流速1.0 mL·min-1，(λ=203 nm)，柱温为30℃，建立了当归补血总苷的HPLC指纹图谱。180只Wistar大鼠随机分为正常对照组、模型对照组、强的松组和当归补血总苷大、中、小剂量组，每组30只。

The whole-cell biocatalyst showed a good catalytic capability for repeated use, and the yield of methyl esters could still maintain 82% after it was used for 4 times.

全细胞生物催化剂在反应4次后甲酯得率仍可保持在82%，显示出良好的重复催化性能。

Such as Vincristine Sulfate, Vinorelbine Bitartrate, NHDC and Hesperidin Methyl Chalcone.

例如硫酸长春新碱、酒石酸长春瑞宪，NHDC。

The effect ofα-methyl-D-mannoside and bivalence metal ion on LCA coupling to epoxy-coated magnetic particles is not significant.

研究α-甲基甘露糖及二价金属离子对其分离纯化糖蛋白的影响，二者对于凝集素与环氧磁粒的偶联并无显著影响。

We also study the effect ofα-methyl-D-mannoside and bivalence metal ion on LCA coupling to epoxy-coated magnetic particles.

研究α-甲基甘露糖苷及二价金属离子对于偶联反应的影响。

My first article for Screen Power Magazine, which is to this day is the official magazine of Jackie Chan, was a DVD review of the Hong Kong actioner Gen-X Cops, starring Nicholas Tse and Daniel Wu.

我的第一篇文章为屏幕力量杂志，在对这天是Jackie Chan 正式杂志，是香港actioner Gen X 警察的DVD 回顾，担任主角Nicholas Tse 和丹尼尔吴。

His lips grazed hirs, Now what are you going to do?

他的唇使吃草了 hirs，现在你将要做什麼？