Secondly diisothiocyanates were synthesized by the phase transfer reaction of bischloroformate and potassium thiocyanate;
然后将双氯甲酸酯与硫氰酸钾在相转移催化剂的催化下反应生成二异硫氰酸酯;
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。
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。
The catalyst has high activity, selectivity and the characteristic of reaction controlled phase transfer catalyst.
该催化剂具有高活性、高选择性,且具有反应控制相转移催化剂的特性。
The results show that increasing reaction temperature, using acetone as cosolvent or sodium dodecyl sulfate as phase-transfer reagent can accelerate the reaction.
结果表明,升高反应温度、以丙酮为共溶剂或以十二烷基硫酸钠作相转移剂均可使反应速度加快。
The chitosan was prepared with 92% deacetylation degree using n-butanol and sodium hydroxide as a reaction medium and cetyltrimethylammonium bromide as a phase transfer catalyst.
采用正丁醇-氢氧化钠反应体系,以十六烷基三甲基溴化铵为相转移催化剂,制得脱乙酰度为92%的壳聚糖。
A detailed introduction to the types, character, mechanism, influential factors and accomplishment method of phase transfer catalytic reaction under ultrasonic radiation re-viewed.
本文对超声波辐射下相转移催化反应的类型、特点、机理及影响反应的因素和实现方法作了评述。
In the new reaction system, product can easily isolate and catalyst can be recycled owing to the phase transfer catalysis character of catalyst in reaction process.
在此新反应体系中,催化剂呈现反应过程相转移催化特性,产物易分离,催化剂可回收循环利用。
The paper reviews the effects of the phase transfer catalysts, base, temperature, time in the reaction.
发现碱的浓度、碱的用量、反应时间及相转移催化剂的存在对反应影响较大。
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。
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。
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。
Their phase transfer catalytic ability for the reaction of N-alkylation, O-alkylation and oxidation were also determined.
测定了其对氧烷基化反应、氮烷基化反应的相转移催化作用。
The application of phase transfer catalysis in fluorination of halo-aromatic compounds, mechanism, variety and reaction condition of fluorination are reviewed in this article.
从相转移催化剂的种类、原理、反应条件以及它在卤代芳香族化合物氟化反应中的应用等方面对相转移催化剂的作用进行概括和总结。
Benzyl chloride and isobutylaldehyde were transformed into muguet alcohol through phase-transfer reaction and catalytic hydrogenation.
从氯化苄和异丁醛经相转移反应及催化加氢的方法得铃兰醇。
With strong bases under ultrasonication and phase - transfer catalysis, the reaction of 7, 7 -dihalocarane and haloform can generate halogen exchanges.
在强碱条件下,用超声辐射并使用相转移催化剂,二卤降蒈与卤仿反应发生卤素交换。
In this paper, we investigated the arylation reaction ofp-amino acetylbenzene with ferrocene catalyzed by phase transfer catalyst.
本文以对氨基苯乙酮和二茂铁为底物,在相转移催化剂存在的条件下发生重氮芳基化反应。
Quaternary ammonium heteropolyphosphatotungstate, as one kind of the phase transfer catalysts, has good catalysis activity in two phase catalysis reaction of micelle.
磷钨杂多酸季铵盐作为相转移催化剂,在胶束两相催化反应中具有良好催化效率。
The phase transfer catalyzed Wittig reaction of allyl diphenyl phosphonium salt with substituted aromatic aldehydes using potassium carbonate as base provides 1, 3-dienes with good E-selectivity.
本文报道了二苯基烯丙基型鏻盐与取代芳醛在碳酸钾作用下的固一液相转移催化反应。
The reaction is based on the treatment of epichlorohydrin with sodium stearate in the presence of phase transfer catalyst. About 90% of monoglycerides are obtained in quantitive yields.
在相转移催化剂存在下,硬脂酸盐和环氧氯丙烷反应,可获得含量90%左右的脂肪酸甘油单酯。
In it often accompany heat transfer, mass transfer, chemical reaction and phase change. Mutual interactions of mass, momentum, energy and heat among different phases are very complicated.
气粒多相流动中往往伴随着传热传质、化学反应、相变等,相与相间的质量、动量、能量和热的相互作用十分复杂。
In this process, styrene arid sodium propionate is used as raw metalsm, styralyl propionate is synthesized by phase transfer catalysis reaction.
本文报道了一种丙酸苏合香酯的合成新工艺,研究了以苯乙烯及丙酸钠为原料,相转移催化合成了丙酸苏合香酯。
It was observed that the concentration of NO2 in the gas emission decreased greatly during oxidation and the phase transfer catalyzer as well as ultrasonic played important role in the reaction.
研究发现,氧化过程中尾气中NO2的浓度明显减小,相转移催化剂和超声波辐射作用对反应有重要作用。
Based on the principle of phase transfer catalysis, 4-methoxy-phenylhydroxy-acetic acid was synthesized by the carbonyl addition reaction of 4-methoxybenzaldehyde.
以对甲氧基苯甲醛、三氯甲烷为原料,相转移催化羰基加成法合成了对甲氧基苯乙醇酸。
Poly (N-vinyl carbazole) was modified to prepare azo-PVK by post-azo-coupling reaction with diazo salt as raw material using phase-transfer catalysts.
我们以聚乙烯咔唑为偶合组分,和发色基团对硝基苯重氮盐在相转移催化剂存在下,采用后重氮偶合方法,制备出偶氮化聚乙烯咔唑。
A solid phase and a liquid phase are efficiently mixed in the reactor in order to enhance the heat and mass transfer efficiency during the reaction.
在反应器中固液两相进行高效的混合,强化反应过程的传热和传质效率。
The synthesis of benzyl-2-naphthyl ether by the reaction of 2-naphthol and benzyl chloride using phase transfer catalyst Bu_4NBr was studied.
为了探索香料苄基-2-萘基醚的合成方法,通过对催化剂的改进和利用超声波技术改善催化条件,使苄基-2-萘基醚的合成过程向绿色化靠近。
The synthesis of benzyl-2-naphthyl ether by the reaction of 2-naphthol and benzyl chloride using phase transfer catalyst Bu_4NBr was studied.
为了探索香料苄基-2-萘基醚的合成方法,通过对催化剂的改进和利用超声波技术改善催化条件,使苄基-2-萘基醚的合成过程向绿色化靠近。
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