Effect of Molecular Sieves and Methanol on the endo-Selectivity in La(OTf)_3-catalyzed Cyclization of 5-Hydroxy-2-methoxymethyl-1,2-epoxide System

Tetsuo Tokiwano; Kenshu Fujiwara; Akio Murai

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Effect of Molecular Sieves and Methanol on the endo-Selectivity in La(OTf)_3-catalyzed Cyclization of 5-Hydroxy-2-methoxymethyl-1,2-epoxide System

机译：分子筛和甲醇对La（OTf）_3-催化的5-羟基-2-甲氧基甲基-1,2-环氧化物体系内环选择性的影响

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摘要

Molecular sieves improved the reproducibility of the cyclization catalyzed by La(OTf)_3 in the 5-hydroxy-2-methoxymethyl-1,2-epoxide system, and addition of methanol raised the desired endo-selectivity.

机译：分子筛提高了La（OTf）_3在5-羟基-2-甲氧基甲基-1,2-环氧体系中催化的环化反应的重现性，并且添加甲醇提高了所需的内选择性。

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《Chemistry Letters》 |2000年第3期|共2页
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Tetsuo Tokiwano; Kenshu Fujiwara; Akio Murai;
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中图分类化学;化学工业;
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1. Effect of Molecular Sieves and Methanol on the endo-Selectivity in La(OTf)_3-catalyzed Cyclization of 5-Hydroxy-2-methoxymethyl-1,2-epoxide System [J] . Tetsuo Tokiwano, Kenshu Fujiwara, Akio Murai Chemistry Letters . 2000,第3期

机译：分子筛和甲醇对La（OTf）_3-催化的5-羟基-2-甲氧基甲基-1,2-环氧化物体系内环选择性的影响
2. Highly selective synthesis of 6-substituted benzothiophenes by Sc(OTf)3-catalyzed intermolecular cyclization and sulfur migration [J] . Xiaoming Wang, Tobias Gensch, Frank Glorius Organic Chemistry Frontiers . 2016,第12期

机译：Sc（OTf）3催化的分子间环化和硫迁移的高选择性合成6-取代的苯并噻吩
3. Gd(OTf)_3-catalyzed synthesis of geranyl esters for the intramolecular radical cyclization of their epoxides mediated by titanocene(ⅲ) [J] . William H. Garcia Santos, Carlos E. Puerto Galvis, Vladimir V. Kouznetsov Organic & biomolecular chemistry . 2015,第5期

机译：Gd（OTf）_3催化合成香叶菊酯，以钛茂（ⅲ）介导的环氧化物分子内自由基环化
4. Yb(OTf)3-Catalyzed Reaction of Epoxides with Nitrogen Heterocycles underSolvent-free Conditions [C] . (missing) International symposium on green chemistry in China . 2002

机译：Yb（OTF）与氮杂环的环氧化物的3催化反应缺溶于溶剂条件
5. Study of the photochemical properties of some aromatic compounds on molecular sieves using a picosecond pulse laser system. [D] . El-Rayyes, Ali El-Said Hassan. 2001

机译：使用皮秒脉冲激光系统研究分子筛上某些芳香族化合物的光化学性质。
6. Bi(OTf)3-Catalyzed 5-Exo-Trig Cyclization via Halide Activation [O] . Ryuji Hayashi, Gregory R. Cook -1

机译：通过卤化物活化的Bi（OTf）3-催化的5-Exo-Trig环化
7. Solvent-Free Al(OTf)3-Catalyzed Aminolysis of 1, 2-Epoxides by 2-Picolylamine. A Key Step in the Synthesis of Ionic Liquids [O] . -1

机译：通过2-吡喃基胺，无溶剂Al（OTF）3催化的氨基溶液1,2-环氧化。离子液体合成的关键步骤
8. Molecular sieves as catalysts for methanol dehydration in the lpdmetm process [R] . Wang, A. W. 2002

机译：分子筛作为lpdmetm工艺中甲醇脱水的催化剂

Effect of Molecular Sieves and Methanol on the endo-Selectivity in La(OTf)_3-catalyzed Cyclization of 5-Hydroxy-2-methoxymethyl-1,2-epoxide System

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