cyclization

cyclization

1. Keywords PAN fiber;Pyrolytic characteristics;Kinetics of cyclization;In-situ X-ray diffraction techniques;

PAN纤维;热解特征;环化动力学;在位X-射线衍射技术;

2. Keywords butadiene;rare earth catalyst;cispolymerization;allylchloride;cyclization;cyclopolymerization;

丁二烯;稀土催化剂;顺式聚合;烯丙基氯;环化;环聚;

3. butadiene cyclization

丁二烯环化

4. Keywords styrene-butadiene rubber;cyclized styrene-butadiene rubber;cyclization;solvent;characterization;

丁苯橡胶;环化丁苯橡胶;环化反应;溶剂;表征;

5. Keywords 3;4;5-trimethoxybenzaldehyde;trimethoprim;condensation cyclization;sodium methanol;solution heat;calorimeter;

三甲氧基苯甲醛;甲氧苄氨嘧啶;缩合;环合;甲醇钠;溶解热;量热计;

6. Allene oxide cyclase (AOC) catalyzes the stereospecific cyclization of an unstable allene oxide to (9S,13S)-12-oxo-(10,15Z)-phytodienoic acid, which is the precursor next to jasmonic acid.

丙二烯环化氧化酶AOC能把一种不稳定的具有立体特异性的丙二烯环化物催化氧化成(9S, 13S)-12-O-(10，15Z)-植物二烯酸，此植物二烯酸是茉莉酸的最终前体。

7. Keywords copolymer of PAN;halogeuated carborxylic acid;stabilization;cyclization;thermal behavior;

丙烯腈共聚物;卤代羧酸;热稳定性;环化反应;热行为;

8. The Zn species in the catalysts are responsible for propane and cyclic hydrocarbons dehydrogenation, while the Bronsted acid sites located in the channel of Zn/HZSM-5 oligomerization and cyclization.

丙烷在改性分子筛上芳构化过程是金属离子和分子筛酸性中心共同作用的双功能催化过程。

9. Keywords ethyloxymethylnaphththyridinecarboxylic acid;condensation reaction;cyclization reaction;ethylation reaction;hydrolysis reaction;spectrum characteristic;

乙基氧甲基萘啶羧酸;缩合反应;成环反应;乙基化反应;水解反应;光谱特征;

10. Keywords dichloropropanol;cyclization;epichlorohydrin;sodium chloride;

二氯丙醇;环化;环氧氯丙烷;氯化钠;

11. CYCLIZATION COEFFICIENTS AND REACTIVITY RATIOS FOR 1,3 DIVINYL 1,1,3,3-TETRAMETHYLDISILOXANE/ STYRENE COPOLYMERIZATION

二烯基-1,1,3,3-四甲基二硅氧烷/苯乙烯共聚合的环化率与竞聚率

12. Keywords 1;3 Divinyl 1;3;3-tetramethyldisiloxane;Styrene;Cyclocopolymerization;Reactivity ratio;Cyclization coefficient;

二烯基-1`1`3`3-四甲基二硅氧烷;苯乙烯;环化共聚合;竞聚率;环化率;

13. Keywords samarium diiodide;intramolecular cyclization reaction;application;

二碘化钐;分子内环化反应;应用;

14. Application of samarium diiodide in intramolecular cyclization reaction

二碘化钐在分子内环化反应中的应用

15. Using 4-chloro salicylic acid as starting material, through novel method, via esterification, etherification, hydrolysis, cyclization, bromination to give the product.

从4氯水杨酸开始,运用新颖的方法,经过酯化、成醚、水解、闭环、溴代5步化学反应得到产物,总收率19%。

16. The phenomonon was explained in view of the mechanism of chemical cyclization of poly(amic acid).

从聚酰胺酸化学环化反应机理出发对这一结果给予了解释。

17. Bromacil was synthesized using 2-bromobutane and urea as the starting materials in three steps including condensation,cyclization and bromination with total yield of 61%.

以2-溴丁烷和尿素作为起始原料,经缩合、环化、溴代三步反应得到除草定,总收率为61%。

18. The new process,from the starting material N-phenyl-2,6-dichloroaniline through chloroacetylation,cyclization and hydrolysis,gained 73%total yield.

以N-苯基-2，6-二氯苯胺为起始原料，经酰胺化、环合、水解开环得目标产物，总收率达74%。

19. Menthol was obtained from lemon eucalyptus oil via cyclization and catalytic hydrogenation.

以柠檬桉叶油为主要原料经环化、催化氢化二步反应得到薄荷醇。

20. Tinoridine hydrochloride was synthesized from benzylamine by condensation, cyclization, decarboxylation, cyclization and then salt formation in an overall yield of 55.2%.

以苄胺为起始原料,经缩合、成环、脱羧、环合、成盐等5步反应得到目标化合物盐酸替诺立定。反应总收率55。2%。

21. Bromoethyl 2(H) quinolinone was synthesized by the acylation of aniline with biketene in toluene, the bromination in chloroform, and the cyclization in sulfuric acid.

以苯胺为原料,经双乙烯酮在甲苯中酰化得乙酰乙酰苯胺;在氯仿中溴化得溴乙酰乙酰苯胺;

22. Ketoprofen was synthesized from anline by amidation, cyclization, benzylation, hydrolysis, deamination and oxidation with an overall yield of 42.5 %.

以苯胺为起始原料,经过酰胺化、环合、苄基化、水解、脱胺基、氧化等几步反应,得到产物酮基布洛芬,总收率42.5%。

23. Polyquin(2,3-b) acridine-12,14(5,7) dione(polyquinacridinedione,PQA) was synthesized via condensation,cyclization and oxidation from m-phenylenediamine and dimethyl 2,5-dioxocyclohexane-1,4-dicarboxylate etc.

以间苯二胺,2,5-二氧环己二甲酸二甲酯为原料,经缩合、闭环、氧化等反应,制得了聚喹吖(2,3b)啶-12,14(5,7)二酮(PQA)并进行了表征;

24. Low-valent Titanium Induced Reductive Cyclization of o-Nitrobenzamides and Ketones

低价钛引起的邻硝基苯甲酰胺与酮的还原成环反应

25. Keywords Enoxacin;condensation;cyclization;naphthyridine;piperazine;

依诺沙星;缩合反应;环合反应;萘啶;哌嗪;

26. Keywords pseudo-ionone;ionone;cyclization;alcohol;ester;sulfuric acid diluent;

假紫罗兰酮;紫罗兰酮;环化;硫酸;稀释剂;醇;酯;

27. Keywords Fe（0） catalyst;radical;cyclization reaction;allyl trichloroacetate;

催化剂;自由基;环化反应;三氯乙酸烯丙酯;

28. Keywords catalytic cyclization;N hydroxyethyl piperazine;triethylenediamine;

催化环合;N-羟乙基哌嗪;三乙烯二胺;

29. Study Progress on Cyclization of Citronellal to (-)-isopulegol over Catalysts

催化香茅醛环化为(-)-异胡薄荷醇的催化剂研究进展

30. Keywords asymmetric cyclization;effect of the solvent;reaction mechanism;density functional theory;

关键词不对称环化;溶剂效应;反应机理;密度泛函;

31. Keywords nitrone;sensitizer;photo cyclization reaction;electron transfer;

关键词硝酮;敏化剂;光环化反应;电子转移;荧光猝灭;

32. intramolecular cyclization

分子内环化作用

33. intramolecular cyclization reaction

分子内环化反应

34. Influences of Intramolecular Cyclization on PVA Crosslinked System

分子内环化对聚乙烯醇交联体系的影响

35. The cyclization of compound 5 and 9 with thiophosphorodichloridates 6 in the presence of triethylamine give newtype of cyclothiophosphorodiamidates 7 and cyclothiophosphoramidates 10 respectively.

化合物5和9分别与硫代磷酰二氯酯6发生关环反应，得到新型的多环硫代磷酰二胺酯7和硫代磷酰胺酯10。

36. Keywords Atom Transfer Radical Polymerization（ATRP）, kinetics, n-butyl methacrylate （n-BMA）,Temperature Effect, Living and unliving features, cyclization;

原子转移自由基聚合;甲基丙烯酸正丁酯;动力学;温度效应;活性与非活性特征;环化反应;

37. crude oil cyclization

原油环化

38. STUDIES ON CYCLIZATION OF BIS(1-CARBONYLAMINO -3-ARQYLTHIOUREA)METHANES COMPOUNDS

双(1-甲酰胺基-3-芳酰基硫脲)甲烷类化合物环化反应的研究

39. Keywords Bicyclic nucleosides;Tricyclic nucleosides;Radical cyclization;1;3-Dipolar cycloaddition;Ring-closing metathesis;

双环核苷;三环核苷;自由基环合;1;3-偶极环加成;烯烃复分解;

40. Keywords soluble polymer reagent;polyethylene glycol;（diacetoxy）iodobenzene;aldehyde N-acylhydrazone;1;3;4-oxadiazone;oxidative cyclization;

可溶性聚合物试剂;聚乙二醇;二醋酸碘苯;醛的N-酰基腙;1;3;4-恶二唑;氧化成环反应;

41. Further more,formylization and cyclization reaction are separately carried out in two tanks to avoid corrosion of acid and alkali for equipments.

同时,将酰化反应和闭环反应分罐进行,避免酸碱物料对设备的腐蚀。

42. final cyclization

后环合法

43. Keywords fused nitrogenous heterocyclic compounds;cyclization reaction;acylation;pyrazoline;

含氮稠杂环;环合反应;酰基化反应;吡唑啉;

44. Keywords indole derivative;reduction;cyclization;lung cancer cell A549;growth inhibitory activity;

吲哚衍生物;还原;环化;肺癌A549细胞;生长抑制活性;

45. Keywords piperidone;Michael addition;Dieckmann cyclization;decarboxylation;fine chemicals intermediate;

哌啶酮;迈克尔加成;狄克曼环合;脱羧;精细化工中间体;

46. Keywords quinoline;reductive cyclization;2-nitrochalcone;indium;iodine;

喹啉;还原环化;2-硝基查尔酮;铟;碘;

47. Intramolecular Cyclization of Diols into Lactone Using Solid Catalyst

固体催化剂用于二元醇分子内环化制内酯的研究

48. primary cyclization

基本环化反应

49. biomimetic polyene cyclization

多烯物仿生环化

50. Keywords Peptide conformational analysis;Systematic search;Peptide cyclization yield;

多肽构象分析;系统搜索法;环肽环化产率;

51. Cyclization of Pseudomethylionone by Catalyzing of Macroreticular Resin

大孔树脂催化假性甲基紫罗兰酮的环化

52. Keywords Hirsutellide A;Tasiamide;natural products;couple reagent;cyclization;N-methylation;diazotization hydrolysis;

天然产物;偶合试剂;环合;N-甲基化;重氮化水解;

53. In another direction, the radical cyclization of thioimide with acylsilane produced simple cyclization product in low yield without expected enol silyl ether compound.

对于硫醯亚胺与矽基酮的自由基反应，则是得到低产率的简单环化产物，而不是预期的烯醇矽醚化合物。

54. H-NMR spectrum of cyclized CR was analyzed and the equations that are used to calculate the degree of cyclization and the incorporated solvent content by 1 H-NMR method were obtained.

对环化氯丁橡胶的1H -NMR谱进行了归属 ,并推导出计算环化氯丁橡胶 (CR)的环化度和溶剂参与量的公式。

55. Keywords 4-hydroxyphenyl acetic acid;phthalide;4-（2-carboxybenzyloxy）phenylacetic acid;cyclization;

对羟基苯乙酸;苯酞;4-（2-羧基苄氧基）苯乙酸;环合;

56. Keywords Accelerator M reaction mechanism Cyclization Acid catalyst;

巯基苯并噻唑;反应机理;环合;酸催化剂;

57. The effect of solvents and steric hidrance on the stereochemistry of cyclization is investigated in details.

并且考察了在环合反应中溶剂和空间位阻对立体选择性的影响。

58. Keywords isophorone;3;5;5 trimethylcyclohexene 1;4 dione;oxygen carrying chelate;cyclization;

异佛尔酮;氧化异佛尔酮（3`5`5-三甲基环己烯-1`4-二酮）;携氧螯合剂;环化;

59. Keywords isoprene;rare earth catalyst;cyclization;cyclized polyisoprene;cyclopolymerization;

异戊二烯;稀土催化剂;环化反应;环化聚异戊二烯;环聚反应;

60. Keywords Cationic cyclization;Cationic polymerization;Aluminium chloride;Aluminium trifluoromethanesulfonate;1;3 Pentadiene;

戊二烯;阳离子聚合;环化聚合;三氯化铝;三氟甲基磺酸铝;

61. The mechanism was discussed in the proton acid catalytic reaction of furan phenol cyclization.

探讨了呋喃酚环合反应质子酸催化机理。

62. The mechanism of in-situ cyclization during the foaming and heat treatment was studied using differential scanning calorimeter (DSC) and Fourier transform infrared spectrometer (FTIR).

探讨了相应共聚物在发泡和热处理过程中发生的“原位成环”反应及机理,并利用差示扫描量热分析(DSC)和红外光谱(FTIR)进行了验证。

63. Abstract: We have realized a cyclization reaction of 2,3-allenoic acids 1 in the presence of simple alkyl or aryl-substituted allenes 3.

摘要：在简单烷基或者芳香取代的丙二烯存在的情况下我们实现了2，3-亚兰敦酸的环合反应。

64. Methods:Starting from 5-cyanophthalide, escitalopram oxalate was prepared via several steps including nucleophilic addition, hydrolysis, chemical separation, cyclization and salt formation.

方法:以5-氰基苯酞为起始原料,经亲核加成、水解、化学拆分、环化和成盐等反应制得抗抑郁药草酸依地普仑。

65. METHODS:It was synthesized from 2, 6 dichlorophenol and 2 chloropropinitrile via three steps of etherification, cyclization and salt formation.

方法:以二氯苯酚和2氯丙腈为起始原料,经成醚,环合和成盐反应三步得到目标化合物。

66. Methods The product was synthesized from 1-(4-nitrophenyl)piperazine by Boc protection,reduction of nitro group,acylation,hydrazinolysis and cyclization.

方法以1-(4-硝基苯基)哌嗪为起始原料,经Boc保护、硝基还原、酰化、肼解、环合制得目标化合物。

67. METHODS Bretazenil was synthesized from 3-bromoaniline by cyclization, oxidation and ring-enlargement reaction, etc.

方法以3-溴苯胺为起始原料,经过成环、氧化、扩环等反应得到目标产物。

68. METHODS Gimeracil was synthesized by steps of condensation, cyclization, chlorination and hydrolysis.

方法以丙二腈为起始原料，经缩合、环合、氯化、水解等5步反应制得吉美拉西。

69. METHODS Strontium ranelate was synthesized from citric acid via decarboxylation,esterification,cyclization,alkylation,hydrolysis and salification.

方法以枸橼酸为起始原料,经过脱羧、酯化、环合、烷基化、水解成盐等多步反应生成终产物雷尼酸锶。

70. Methods Starting from anisole,liarozole was synthesized by Friedel-Crafts(acylation,)nitration,nucleophilic substitution,reduction and cyclization.

方法以苯甲醚为起始原料,经傅克酰基化、硝化、取代、还原、环合等7步反应得到目标化合物利阿唑。

71. Keywords anhydrous piperazine selectivity intramolecular cyclization catalytic amination solvent;

无水哌嗪;选择性;分子内环合;催化胺化;溶剂;

72. The study on intramolecular cyclization of polyisoprene is reviewed and dissussed. The trend of the cyclization of polyisoprene is suggested.

本文对目前聚异戊二烯环化反应的研究作了概述与讨论,提出了聚异戊二烯环化反应研究的方向。

73. Another key step in this entry was a novel tandem cyclization promoted by zinc reduction for the simultaneous construction of B- and D-rings (Figure ab-1).

本研究的另一个关键步骤就是利用锌粉还原而引起的新型tandem环化反应来成功构筑B-和D-环系(Figure ab-1)。

74. Keywords thiocyclam;sulphonation;cyclization;salification;

杀虫环;磺化;环化;成盐;

75. Keywords chalcone;cyclization;Michael addition reaction;hydrogenation;pyrrolines;

查尔酮;环合;迈克尔加成;还原;吡咯啉;

76. internuclear cyclization

核间成环作用

77. A series of eneynes and alkynes has been widely utilized for the platinum-catalyzed cyclization reactions leading five/six-member rings or complex ring constructions.

概述了铂催化剂在炔烃烯炔类化合物成环反应中的应用,反应以较易得的原料,构建出五元、六元环及多种复杂环结构体系。

78. Keywords rubber cyclization cyclized rubber;

橡胶;环化;环化橡胶;

79. Selective cyclization of the biscarbanion of 1,1 bis(2 t butylsulfnylethyl) dodecylphenylsulfone (1) under the different conditions was investigated.

比较 1,1 双 (2 叔丁基砜乙基 )十二烷基苯基砜 (1)双碳负离子在不同条件下的环合反应结果 .

80. Keywords niacin;cyanogens ethyl acetate;hydrolytic decomposition;cyclization;pyrimidine;S-methyl-iso-thiourea;guandine nitrate;

烟酸;氰基乙酸乙酯;环化反应;水解反应;嘧啶;甲基异硫脲;乙眯盐酸盐;硝酸胍;