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- Keywords Chiral phase transfer catalyst Alkylation; 手性相转移催化剂;烷基化;
- Keywords chiral phase transfer catalyst;chiral diquaternary amm onium salts;synthesis;asymmetric induction effect; 手性相转移催化剂;手性双季铵盐;合成;不对称诱导效应;
- Keywords enantioselective alkylation;chiral phase transfer catalyst;cinchona alkaloid; 对映选择性烷基化反应;手性相转移催化剂;金鸡纳生物碱;
- Keywords chiral phase transfer catalyst;chiral quatermary ammu onium salt;L-tryptophan;asymmetric synthesis;the effect of asymmetric indu ction; 手性相转移催化剂;手性季铵盐;L-（-）-色氨酸;不对称合成;不对称诱导效应;
- chiral phase transfer catalyst 手性相转移催化剂
- Synthesis and Asmmetric Induction Effect of Chiral Phase Transfer Catalysts 手性相转移催化剂的合成和不对称诱导效应
- Progress of the Chiral Phase Transfer Catalysts and the Applications in Asymmetric Catalytical Reaction 手性相转移催化剂及其在不对称催化反应中的应用
- Keywords chiral phase transfer catalysts;asymmetric catalytic reaction;chiral quarternary ammonium salts;chiral crown ethers;chiral phase transfer catalysis; 关键词手性相转移催化剂;不对称催化反应;手性季铵盐;手性冠醚;相转移催化反应;
- The phase transfer catalyst Q-l can be repeatedly used. 相转移催化剂可反复使用。
- Using abietic acid as beginning material, by the reaction of deoxidize, substitution and quaternarization, we get two new chiral quaternary ammonium salts as phase transfer catalyst : PTC-lc and PTC-Id. 以去氢枞酸为初始原料，经还原、取代、季铵化等反应，合成了两种新型手性一元季铵盐相转移催化剂：PTC-1c和PTC-1d。
- chiral phase transfer catalysts 手性相转移催化剂
- 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。
- 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。
- The kinetic of hydrolysis of benzal chloride was studied by using a new kind of phase transfer catalyst in this paper. 研究了在新型相转移催化剂作用下苄叉二氯水解反应过程的动力学。
- During the experiments, it is discovered that chiral phase transfer catalysis deriving from cinchonine or ephedrine hydrochloride can induce the asymmetry synthesis of mandelic acid in the existence of adscititious solvent. 实验还发现,由辛可宁或麻黄碱衍生的手性相转移催化剂在有外加溶剂时才能诱导扁桃酸的不对称合成。
- Vinyl benzyl alcohol was synthesized by hydrolysis of 4-chloromethyl styrene with phase transfer catalyst. 以相转移催化剂催化对氯甲基苯乙烯水解,合成了对乙烯基苯甲醇。
- 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。
- The asymmetric epoxidation of olefins has been investigated by using these five complexes as catalysts,chiral quaternary ammonium salts as phase transfer catalysts. 结果表明:金属卟啉锰中苯环上的不同取代基对烯烃环氧化速度有较大的影响;
- Tetrabutyl ammonium bromide is considered as the best phase transfer catalyst, with 85.7% yield. 实验结果表明：以四丁基溴化铵为相转移催化剂，氧化反应的收率可提高到85.;7%25。
- 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。
