羟基苯

The problems which existed in the D-p-hydroxyphenylglycine concentrative crystallization process are analyzed.

分析了对羟基左旋苯甘氨酸母液浓缩结晶过程存在的问题，介绍了三效热泵蒸发结晶工艺。

A series of organic reversible thermochromic materials are prepared using bromocresolpurple as chromophoric reagent,aromatic compound with hydroxyl(hydroquinone,bisphenol A,1-naphthol)as delomorphic rea- gent and hexadecanol as solvent.

以溴甲酚紫为发色剂，含羟基的芳香族化合物(对苯二酚、双酚A和1-萘酚)为显色剂，十六醇为溶荆制备了有机可逆热变色材料。

In a similar way, using N,N\'-dibenzyl tartamide as auxiliary,-(2-methyl)allyl-2-chloro-phenyl-methyl azide, a vital intermediate of Repaglinide, can be prepared via asymmetric allylation of o-chlorobenzaldehyde in

产物经氧化和碘加成内酯化反应得到阿伐他汀中间体(3R，5S)-3-羟基-5-碘甲基戊内酯(10)；将N-苄基酒石酸二酰胺用于邻氯苯甲醛的不对称烯丙基化反应以较高光学收率得-甲基烯丙基-2-氯苯基-甲基醇

A hyperbranched macromonomer (3) was synthesized with maleic anhydride,diethanolamine,o-phthalic anhydride by step polymerization,take advantage of the different activities of functional groups.

以顺丁烯二酸酐、二乙醇胺、邻苯二甲酸酐等为原料，利用官能团活性的差异，通过逐步展开的方法合成了含有双键和端羟基的聚型分子结构的超支化大单体(3)。

The first asymmetric total synthesis of coumarinolignoids Daphneticin and it's enantiomer was accomplished starting from 7-hydroxycoumarin and 3, 4, 5-trimethoxybenzaldehyde, in which Sharpless asymmetric dihydroxy reaction was used to construct chiral center, and Mitsunobu reaction was used to obtain desired configuration.

并以7-羟基香豆素和3，4，5-三甲氧基苯甲醛为起始原料，用Sharpless不对称双羟化反应构筑手性中心，用Mitsunobu偶联反应作为关键步骤，合成了手性的香豆素木脂素Daphneticin及其异构体。

Factory engaged in medicine, veterinary medicine, agricultural chemicals and raw materials development and production of intermediates, the series of export products: 2,2 - bipyridine, 2,6 - dihydroxy toluene, propiconazole intermediates, phenol line P , Fluometuron, fluorine pyronaridine oxadiazon, oxadiazon pyronaridine fluorine intermediates, Robenidine hydrochloride and so on.

本厂从事医药、兽药、农用化学品原料药及中间体的研制与生产，系列出口产品：2，2-联吡啶，2，6-二羟基甲苯，丙环唑中间体，酚线磷，伏草隆，氟咯草酮，氟咯草酮中间体，盐酸氯苯胍等等。

A new method for determination of ellagic acid content by UV spectrophotometry was studied.

鞣花酸又名六羟基联苯二酸二内酯，是一种高附加值的林产精细化工品。

Then,the core molecule was used as a coupling agent to condensate with polyethylene glycolsof different molecular weight or polyethylene glycol monomethyl etherin the presence of stannous octoate as catalyst and diphenyl ether as azeotropic agent to remove water.

在辛酸亚锡催化下，以二苯醚为共沸脱水剂，将三官能度小分子TMP-SK3作为偶联剂，进一步与不同分子量的端羟基聚乙二醇和聚乙二醇单甲醚缩合，减压下共沸脱水，制备了以TMP-SK3为核，PEG或PEGm为臂的三臂星形大分子。

As an intermediate for preparing vanillin derived from glyoxylic acid, 3, 4-dihydroxymandelic acid is synthesized based on condensation of catechol and glyoxylic acid in alkaline aqueous solution.

以邻苯二酚和乙醛酸为原料，在碱性条件下发生缩合反应，合成了3， 4-二羟基扁桃酸，此物质是多种香料和药物合成的重要中间体。

Investigation of major metabolic pathways of SFZ-47 in animals The metabolites of SFZ-47 in rabbit urine following oral administration were separated and detected with HPLC and LC-MS methods. On the basis of the chromatographic behavior and mass spectra of the metabolites as well as biotransformation pathways of drugs with the partial structure of SFZ-47, the hydroxylic derivative 4-(3H-1, 2- dihydro-1-pyrrolizinone-2-methylamino benzyl alcohol and the carboxylic derivative 4-(3H-1, 2-dihydro-1-pyrrolizinone-2-methylamino benzoic acid of SFZ-47 were proposed as two potential metabolites and were synthesized.

在动物体内主要代谢途径的确定用HPLC和LC-MS对家兔口服SFZ-47后尿中的代谢物进行了分离、检测，根据代谢产物的色谱和质谱行为以及与SFZ-47有类似结构部分的其它药物的代谢途径，推测其羟基衍生物[4-（3H-1，2-二氢-1-吡咯里嗪酮-2-甲基胺基）苯甲醇]与羧基衍生物[4-（3H-1，2-二氢-1-吡咯里嗪酮-2-甲基胺基）苯甲酸]是两种可能的代谢产物，遂用化学方法合成了这两种衍生物。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。