环化反应

Fe（0）催化三氯乙酸烯丙酯的环化反应研究

Fe ( 0 ) - Catalyzed Radical Cyclization Reaction of Allyl Trichloroacetate

Bergman环化反应在医药领域和高分子领域具有极大的应用前景。

Bergman cyclization reaction has great application prospect not only in the medicine field , but also in polymer field .

这个方法包括Cu催化的三组分反应，Lewis酸催化的电环化反应以及脱氢反应。

The sequential reaction involves a copper-catalyzed three-component reaction , a Lewis acid catalyzed electrocyclic reaction and a dehydrogenation .

论文研究内容主要分为三部分：1.开发了金属Ni催化的非活化1,6-烯炔类化合物的还原环化反应。

It mainly consists of the following three parts : 1 . The nickel-catalyzed reductive cyclization of unactivated 1,6-enynes has been developed .

通过对红外光谱、1H－NMR谱的初步解析，证实了环化反应的发生。

The occurrence of SBR cyclization was confirmed by the primary analysis of IR and 1 H-NMR spectra .

10,10-二苄基-9（10H）蒽醇的酸催化选择性环化反应

Acid-catalyzed Selective Cyclization of 10,10-Dibenzyl-9 ( 10H ) - anthranol

前线分子轨道（FMO）在有机电环化反应中的应用

Application of Frontier Molecular Orbits in the Organic Electrocyclic Reactions

用HNMR法测定相转移环化反应混合物的含量

Determination of the component contents of transfer-phase reactions by ~ 1hnmr

Reformatsky-环化反应合成取代四氢呋喃手性多环化合物的Beckmann裂解反应研究

A Tandem Reformatsky-Cyclization Reaction to Synthesize Substituted Tetrahydrofurans ; Study on Beckmann Fragmentation of Chiral Multi-ring Compounds

衣康酸（IA）共聚单体具有引发环化反应、缓解反应集中放热和减少断链热裂解的作用。

Itaconic acid ( IA ) can initiate cyclization reaction at low temperature , alleviate the concentrated exothermal reactions , and avoid chain scission or thermal degradation .

经预氧化处理后，PAN纳米纤维表面形态及分子链发生一系列变化，这主要与纤维内大分子链发生环化反应有关。

As the pre-oxidation procession , the surface morphology and molecular chain of PAN nano-fiber can produce a series of changes , which is mainly concerned with the cyclization reaction of macromolecular chain of nano-fiber .

本文研究了I2参与的亲电反应，主要对亲电环化反应这一部分作了小结。

In our thesis , we made a summary of iodine participated electrophilic reactions and reported our studies on this .

研究了顺1，4聚异戊二烯在二甲苯溶剂中在酸性复合催化剂SnCl4／PTSA存在下的环化反应。

The cyclization reaction in xylene of cis-1,4-polyisoprene in the presence of binary acidic SnCl 4 / PTSA catalyst was studied .

在酸性条件下磺酰胺的sp3碳-氮键发生断裂，产生碳正离子，然后与烯烃进行烯化或者[3+2]环化反应。

The sp3 carbon-nitrogen bonds of sulfonamides are cleaved under acidic conditions to generate carbocations , which undergo olefination reaction or [ 3 + 2 ] annulation reaction with alkenes .

在环化反应中直接以未经真空分馏的假紫罗酮粗品为原料，加入苯作溶剂，反应1.5h，a-紫罗酮产率达87.87%。

In cyclization reaction , benzene and unpurified pseudoionone were used as solvent and material separately . The yield of the α - ionone was 87.87 % , when the reaction was carried out for 1.5 h.

以傅克酰基化反应、串联的Aldol-Michael反应及Pd-催化的脱卤化氢环化反应为关键步骤，合成了低取代的二苯并并四苯衍生物（DBN）。

Low substituted dibenzo [ fg , op ] naphthacenes were synthesized by using Friedel-Crafts acylation , tadem aldol-Michael solvent-free reaction and palladium catalyzed dehydrohalogenation cyclization as key steps .

以甘氨酸乙酯盐酸盐为原料和丙烯腈进行加成反应，氨基保护，然后在乙醇钠存在下发生Dieckmann环化反应。

The addition reaction of glycine ethyl ester with acrylonitrile and the amino group protecting reaction were carried out , then the Dieckmann cyclization occurred with the action of sodium alkoxides .

手性铜催化剂催化的α-重氮酮的环化反应

Asymmetric Cyclization of α - Diazoketones Catalyzed by Chiral Copper Catalyst

本论文研究了铜催化条件下不饱和肟酯的环化反应。

This thesis deals with the copper-catalyzed cyclization of unsaturated oximes .

钕-铝双金属配合物催化异戊二烯聚合的原位环化反应

Cyclization in situ of Isoprene Polymerization Catalyzed by Nd-Al Bimetallic Complex

三氯化钛促进的酮与硝基化合物的还原环化反应

Titanium Trichloride Promoted Reductive Cyclization of Ketone and Nitro - compound

[60]富勒烯的几种环化反应研究

Investigations on the Several Cyclization Reactions of [ 60 ] Fullerene

环氧氯丙烷装置环化反应的优化控制

Optimum control of cyclization reaction of epoxy chloropropane production facility

手性铑（I）配合物催化的不对称环化反应

Asymmetric Cyclization Using Rhodium ( I ) with Chiral Ligand

酸催化二甘醇脱水环化反应研究

Study on Dehydration Reaction of DEG over Acid Catalysts

氯化铝催化假性紫罗兰酮环化反应的研究

Study on Cyclization of Pseudoionone Catalyzed by Aluminium Chloride

该希夫碱型化合物在室温下为白色固体，非常稳定，在所研究的条件下不发生进一步的环化反应。

In the condition that is studied , the cyclo-reaction is not occurred .

电环化反应选择性规律的一种新解释&轨道转化-电子填充法

A new method for the explaining of electrocyclic reaction Orbital conversion electron filling

三（正）丁基锡氢化物存在下的自由基环化反应

Radical cyclizations in the presence of tributyltin hydride

4－戊烯醛类化合物的铑催化不对称环化反应中烷基取代基的影响

Effect of the Alkyl Substituents on the Rh Catalyzed Cyclization of 4 Penten 1 als