• A variety of new chiral phase transfer catalysts have emerged to this area and added the new vitality to it.

    各种新的手性相转移催化剂不断涌现,给这一领域的研究增加了新的活力。

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  • Polymer imidazole salt 1 is a new kind of polymer phase transfer catalyst, which has the advantages of convenience for preparation, good thermal stability, and high catalytic activity.

    高分子咪唑盐1是一种新型高分子相转移催化剂,具有制备简单、稳定性好、催化活性高等特点。

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  • The phase transfer catalyst Ql can be repeatedly used.

    相转移催化剂可反复使用。

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  • Synthesis of prenyl benzoate under phase transfer catalysis was reported.

    本文报道了相转移催化条件下异成烯基苯甲酸酯的合成。

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  • The results of the experiments show that PEG300 ~ 600 are good phase transfer catalysts.

    实验结果表明:PEG300 ~ 600是合适的固-液相转移催化剂。

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  • Polyvinyl chloride-polyethylene polyamine resin is a new polymer phase transfer catalyst.

    它是一种新型的高分子相转移催化剂。

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  • Mandelic acid was synthesized by means of ultrasonic phase transfer catalysis(PTC) method.

    采用超声波相转移催化技术合成了扁桃酸。

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  • As a phase transfer catalyst polyethylene glycol can improve the selectivity of the reaction.

    聚乙二醇作为相转移催化剂可以提高反应的选择性。

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  • The third part: Synthesis of bis (indolyl) methanes assisted by two phase transfer catalysts.

    第三部分:相转移催化剂作用下合成二吲哚甲烷的研究。

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  • Benzaldehyde was prepared by basic hydrolysis of cassia leaf oil using phase transfer catalyts.

    从桂叶油出发,通过碱性水解制备天然苯甲醛。

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  • As a phase transfer catalyst, polyethylene glycol could improve the selectivity of the reaction.

    聚乙二醇作为相转移催化剂可以提高反应的选择性。

    youdao

  • Nanocatalysts were prepared by combining the method of precipitation with that of phase transfer.

    通过沉淀法和相转移法的结合制备纳米催化剂。

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  • The results showed that poly( ethylene glycol) as a phase transfer catalyst can raise the conversion.

    指出聚乙二醇作为相转移催化剂可增加转化率。

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  • A new kind of phase transfer catalyst of phosphotungstate was synthesized by a new way in this paper.

    采用新的合成方法,合成了一种新型磷钨杂多酸盐相转移催化剂,研究了它在不同合成条件下的产率。

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  • Polyethylene glycols can be used as effective phase transfer catalyst in halogen exchange fluorination.

    聚乙二醇可作为卤素交换氟化反应有效的相转移催化剂。

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  • The synthesis of Rosacetol Roseme by use of phase transfer catalysis at different conditions is studied.

    研究了利用相转移催化剂在不同条件下合成结晶玫瑰的工艺。

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  • This paper discusses the principle with which phase transfer catalyst ACTS on the synthesis of paclobutrazol.

    本文讨论了相转移催化剂在多效唑合成中的作用原理。

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  • Polyethylene glycol 600 showed good phase transfer catalytic effect; the yield after purification was above 89%.

    聚乙二醇600的相转移催化作用明显,精制后产品收率在89%以上。

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  • Ultrasound may replace phase transfer catalysts in phase transfer catalysis reactions and facilitate the reaction.

    在相转移催化反应体系中,超声能够取代相转移催化剂,使反应顺利进行。

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  • By repeated tests, a proper amount of phase transfer catalyst in the TCR -step synthesis of paclobutrazol is fixed.

    通过反复试验,确定了多效唑三步合成中相转移催化剂的最佳用量。

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  • Some application advances of phase transfer catalytic technology in pharmaceutical industry are described in details.

    着重记述了近年来相转移催化技术在医药工业中的应用进展。

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  • These catalytic mechanisms of interfacial agent in some chemical reactions are micelle catalysis and phase transfer catalysis.

    表面活性剂催化化学反应过程的机理有胶束催化和相转移催化。

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  • Benzyl acetate is synthesized by means of phase transfer catalysis with aqueous sodium acetate and benzyl chloride as raw materials.

    以工业品的含水醋酸钠和氯化苄为原料,相转移催化法制备醋酸苄酯香料。

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  • CONCLUSION The phase transfer catalyst has advantages of simple starting material, convenient operations and mild reaction conditions.

    相转移法合成萘丁美酮具有所用试剂易得,操作方法简便,反应条件温和,成本较低等优点。

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  • The mechanism of the reaction and that of phase transfer catalysis were studied. The process parameters were selected by optimum experiment.

    对反应合成、相转移催化机理和合成工艺进行了研究和实验探索,经条件优化实验确定了较佳的合成工艺参数。

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  • For comparatively smaller single-phase load, the duplicate supply single-phase transfer switch made of miniature contactors can be selected.

    对较小的单相负荷可采用由微型接触器构成的双电源单相切换开关。

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  • Two kinds of useful selenoxide reagents are synthesized via the oxidation of selenides by CAN under the condition of phase transfer catalysis.

    采用CAN作氧化剂,在相转移催化条件下高产率地合成了具有重要价值的有机合成中间体苯苄亚硒砜和苄基亚硒砜。

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  • Two kinds of useful selenoxide reagents are synthesized via the oxidation of selenides by CAN under the condition of phase transfer catalysis.

    采用CAN作氧化剂,在相转移催化条件下高产率地合成了具有重要价值的有机合成中间体苯苄亚硒砜和苄基亚硒砜。

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