• 通过成本比较,认为丙酰氯是合适的酰化剂。

    The propionyl chloride was found to be the appropriate acylating agent in terms of the cost.

    youdao

  • 提出了以高氯酸为催化剂,分析纯乙酸乙酯为介质,乙酰化法测定伯、仲醇的实验条件,实现了对经典方法的改进,简化了操作程。

    The experimental condition of acetylating method for determining priminary alcohol and secondary alcohol catalyzed by perchloric acid in the medium of analytically pure ethylacetate is proposed.

    youdao

  • 本论文研制了一种新型烯烃氢甲酰化催化剂。

    In this paper, a kind of new catalysts for olefins hydroformylation was studied.

    youdao

  • 研究了由已二酸二乙酯与水合肼反应合成己二酰二肼。再用乙酸酐酰化己二酰二肼得到金属减活剂N。

    Metal deactivator N, N'-Di-acetyladipic dihydrazine was prepared by reacting diethyl adipate with hydrazine hydrate, and then was treated with acetic anhydride.

    youdao

  • 并考察了HZ - 1沸石交换次数等制备条件和催化剂用量对甲苯的苯甲酰化反应的影响。

    The effects of the catalyst dosage and the preparation conditions of HZ-1 zeolite, for example, number of exchange times on the benzoylation of toluene were studied.

    youdao

  • 采用氢醌双丙酸酯为原料,在甲醇-水溶液中,碱性条件下,加入适量抗氧化剂,经部分醇解脱酰化反应合成氢醌单丙酸酯。

    Hydroquinone monopropionate was synthesized by partially alcoholysized and deacylated of hydroquinone bipropionate in methanol-water solution and alkaline condition with appropriate antioxidant.

    youdao

  • 综述了高效酰化催化剂4-二甲氨基吡啶(DMAP)的合成方法及应用前景。

    This article summarizes the synthetic method of 4-Dimethylaminopyridine (DMAP) and its applying prospect.

    youdao

  • 精制羊毛脂和乙酰化羊毛脂均可做为皮革加脂剂的原料组份。

    The refined lanolin is reacted with acetic anhydride to obtain acetylated lanolin.

    youdao

  • 考察了酰化反应温度、酰化反应时间、硝化剂种类、水解反应时间、还原剂种类、甲酸用量等因素对各步反应收率的影响。

    Factors influencing the product yield are discussed, such as nitrating agents, reductive agents, reaction temperature, reaction time, have been investigated.

    youdao

  • 认识到开发新颖治疗剂的要求,本发明提供新颖组蛋白去乙酰化酶抑制剂。

    In recognition of the need to develop novel therapeutic agents, the present invention provides novel histone deacetylase inhibitors.

    youdao

  • 本文综述了丁酸和植物提取物等饲料添加剂作为组蛋白去乙酰化酶(HDAC)抑制剂在模型动物及畜禽上的研究进展。

    This review focused on the advances of the effect of feed additives, such as butyrate and plant extracts, on model animal and livestock as inhibitors of histone deacetylases (HDAC).

    youdao

  • 通过对利用本发明的方法制备的6-酰基蔗糖氯化和去乙酰化可以制备氯化蔗糖,强力甜味剂三氯半乳蔗糖。

    Chlorinated sucrose, the high intensity sweetener trichlorogalactosucrose can be prepared by chlorination and deacylation of 6-acyl sucrose prepared by the process of this invention.

    youdao

  • 研究了水溶性铑膦络合催化剂两相催化1 -己烯氢甲酰化反应。

    The use of the water-soluble Rh-phosphine complexes for catalytic hydroformylation of 1-hexene in two-phase system was studied.

    youdao

  • 酰化反应用DMAP作催化剂,采用向碎冰上倾倒反应液使产物析出的后处理方法,收率82.8%;

    DMAP as catalyst, the postprocessing steps were simplified with the method of pouring the reaction solution into ice, the yield was 82.8%;

    youdao

  • 以溴化锌为催化剂,在无溶剂条件下实现了醇与苯甲酸酐的酰化反应,部分产物经NMR和IR表征。

    Acetylation between alcohol and benzoyl oxide was carried out using ZnBr_2 as a Lewis acid catalyst in solvent-free condition. Some structures were characterized by NMR and IR.

    youdao

  • 以溴化锌为催化剂,在无溶剂条件下实现了醇与苯甲酸酐的酰化反应,部分产物经NMR和IR表征。

    Acetylation between alcohol and benzoyl oxide was carried out using ZnBr_2 as a Lewis acid catalyst in solvent-free condition. Some structures were characterized by NMR and IR.

    youdao

$firstVoiceSent
- 来自原声例句
小调查
请问您想要如何调整此模块?

感谢您的反馈,我们会尽快进行适当修改!
进来说说原因吧 确定
小调查
请问您想要如何调整此模块?

感谢您的反馈,我们会尽快进行适当修改!
进来说说原因吧 确定