吡喃,pyran英语短句,例句大全

吡喃,pyran
1)pyran[英]['pair?n][美]['pa?,r?n]吡喃
1.New Method for the Synthesis of 4-(Dicyanomethylene)-2-methyl-6-[p-(dimethylamino)-styryl]-4H-pyran as Red Emitter;有机电致红光材料4-(二腈亚甲叉)-2-甲基-6-(4-二甲胺基-苯乙烯)-4H-吡喃的合成新方法
2.Synthesis of 2-Amino-3-cyano-4-aryl-5-methyloxycarbonyl-4H-pyrans on Thermosensitive Copolymer;热敏共聚物负载的2-氨基-3-氰基-4-取代苯基-5-甲氧羰基-4H-吡喃化合物的合成
3.Synthesis and Fluorescence Effects of the Derivatives of 4 - Dicyanomethylene -2,6- dimethyl - 4H - pyran;4-二氰亚甲基-2,6-二甲基-4H-吡喃衍生物的合成及其荧光效应

英文短句/例句

1.Such a helerocycle is found in pyrylium salts.吡喃盐就是这类的杂环。
2.Asymmetric Total Synthesis of Benzopyrans and Dibenzopyrans Natural Products;苯并吡喃及二苯并吡喃类天然产物的手性全合成
3.Pyran is not aromatic, but the phrylium ion is.吡喃不是芳香的，但眬英嗡离子是。
4.New Synthetic Method for 4-Methoxy-7H-Furo[3,2-g] benzopyran-7-one4-甲氧基-7H-呋喃[3,2-g][1]苯并吡喃-7-酮制备的新方法
5.Synthesis and characterization of glycosyl esters of cyclopropanecarboxylic acid(呋喃、吡喃)糖基环丙烷甲酸酯类化合物的合成和结构确证
6.In guaran, about one-half of the D-mannopyranosyl main-chain units contain a D-galactopyranosyl side chain.在瓜拉那中约一半D-吡喃甘露糖主链的单元含一个D-吡喃半乳糖侧链。
7.Synthesis and Activities of 2,3a-Dihydro-chromeno-[4,3-c]pyrazol-3-one Derivatives2,3a-二氢-苯并吡喃[4,3-c]吡唑-3-酮类衍生物的合成及其活性
8.Quantum Chemical Study of the Thermolysis of Chroman苯并二氢吡喃热分解反应的量子化学研究
9.Design and Synthesis of 3H-Naphtho[2, 1-b]Pyrans Compounds & Studies on Their Photochromic Characteristics;3H-萘并吡喃的设计合成及变色特性研究
10.Aerobic Oxidation of Substituted Cyclopentadienes to Pyrylium Cations in Solution;氧气液相氧化取代环戊二烯合成吡喃盐的研究
11.The Synthesis of Derivations of 5-oxo-4H-5,6,7,8-tetrahydrobenzopyran with Microwave Assisted;5-氧代-4H-5，6，7，8-四氢苯并吡喃衍生物的微波全合成
12.Synthesis and Properities of Substituted 3H-naphtho[2,1-b]Pyrans;烷基取代的3H-萘并[2，1-b]吡喃的合成及性能研究
13.Synthesis and Research of Their Properties of Photochromic Compounds Spiropyrans;光致变色化合物螺吡喃的合成及性能研究
14.Study on the Novel Photochromic Spiropyran Dyes with Functional Groups and Their Applications;含功能基团的螺吡喃化合物的合成与性能研究
15.Synthesis of Photochromic Indolinspirobenzopyran;光致变色化合物吲哚啉螺苯并吡喃的合成
16.Microwave-assisted Catalytic Synthesis of 4-Oxo-4H-pyran-2,6-dicarboxylic Acid微波辐射下合成4-氧代-4H-吡喃-2,6-二羧酸
17.Synthesis of 4-Chloro-6-Phenyl-2-(2-Oxopropyl)Tetrahydropyran2-(2-氧代丙基)-6-苯基-4-氯四氢吡喃的合成
18.Synthesis of 1,2,3,4,6-penta-O-acetyl-α-D-glucopyranose1,2,3,4,6-五-O-乙酰基-α-D-吡喃葡萄糖的合成研究

相关短句/例句

2 amino 3 cyano 4H pyran吡喃
1.Cyano 2 methoxylpyridine and 2 amino 3 cyano 4H pyran derivatives were synthesized by one step reaction of 2,5 bisarylidenecyclopentanone with malononitrile in sodium hydroxide/methanol or piperidine/ethanol under microwave irradiation with good yield2,5 -双亚苄基环戊酮与丙二腈在氢氧化钠 -甲醇或哌啶 -乙醇中 ,经微波辐射一步合成了 2 -甲氧基 - 3-氰基 - 4 -芳基吡啶和 2 -氨基 - 3-氰基 - 4 -芳基吡喃衍生物 ,反应在 3～ 9min内完成 ,产率 5 6 %～ 78
2.Cyano 2 methoxylpyridine and 2 amino 3 cyano 4H pyran derivatives were synthesized in single step action 2,6 bisarylidenecyclohexanone on malononitrile in sodium hydroxide/methanol or piperidine/ethanol under microwave irradiation in good yields.一些 2 氨基 4Ｈ吡喃具有光化学活性[2 ] 。
3)pyrane吡喃
1.The compounds of 2,4-diphenyl-5-oxo-tetrahydrothiopyrano [4, 3-d]v -pyrane are synthesized by the condensation reaction of tetraphydrothiopyran-3, 5-biketone and chalcone.利用四氢噻喃-3，5-二酮与查尔酮的缩合反应合成出2，4-二苯基-5-氧代四氢噻喃并[4，3－d]v-吡喃，并探讨了其反应机理，提出了反应历程。
4)benzopyran苯并吡喃
1.Synthesis and Vasorelaxant Activity of Trans-3-hydroxy-4-aminobenzopyran Acetylated Derivatives as K~+ Channel Openers;反式-3-羟基-4-胺基苯并吡喃乙酰化物的合成及其血管舒张活性
2.Synthesis of cis- and trans-2,4,7-Triaryl-5-oxo-4H-5,6,7,8-tetrahydrobenzopyrans;顺(反)-2,4,7-三芳基5-氧代-4 H-5,6,7,8-四氢苯并吡喃衍生物的合成
3.Synthesis and Crystal Structure of Ethyl 2-amino-7,7-dimethyl-4-(4′-fluorophenyl)-5-oxo-5,6,7,8-tetrahydro-4H-benzopyran-2-carboxylate in Water;水相中2-氨基-7,7-二甲基-4-对氟苯基-5-氧代-5,6,7,8-四氢-4H-苯并吡喃-2-甲酸乙酯的合成和晶体结构
5)chromene苯并吡喃
1.The convenient synthesis of a natural chromene;一个苯并吡喃天然产物的简便合成
2.Non-catalytic Synthesis of 2-Amimo-3-cyano- 7,7-dimethyl-4-aryl-5-oxo-5,6,7,8- tetra-4H-chromenes;无催化剂条件下2-氨基-3-氰基-4-芳基-7,7-二甲基-5-氧代-5,6,7,8-四氢-4H-苯并吡喃的合成
6)tetrahydropyran四氢吡喃
1.6%, while m-aminophenol was used as material, tetrahydropyran as hydroxyl shielding effect agent, ethyl bromide as ethyl reactant and dimethylsulfate as methyl reactant.采用间氨苯酚为原料,以四氢吡喃(THP)作羟基保护剂,以溴乙烷作烷基化试剂,硫酸二甲酯作甲基化试剂,在原有最优化合成工艺条件下,经4步反应合成N-乙基间甲氧基苯胺,产率达到57。
2.4-Chloro-6-phenyl-2-(2-oxopropyl)tetrahydropyran was obtained unexpectedly by the Prins reaction of 4-methyl-1,8-nonadiene-4,6-diol and benzaldehyde in the presence of indium trichloride in methylene chloride at room temperature.以4-甲基-1,8-壬二烯-4,6-二醇为Prins反应的起始原料,在三氯化铟存在下与苯甲醛反应,得到了2-(2-氧代丙基)-6-苯基-4-氯四氢吡喃。
3.9%,while m-aminophenol is used as reactant,tetrahydropyran as hydroxyl shielding effect agent,acetic anhydride as acyl protection reactant and amidogen mono-substituted alternative reactant,ethyl bromide as ethyl reactant,dimethylsulfate as methyl reactant.采用间氨苯酚为原料,以四氢吡喃(THP)作羟基保护剂,以醋酸酐作酰基保护剂和氨基单取代的专一选择剂,以溴乙烷作烷基化试剂,硫酸二甲酯作甲基化试剂,在原有最优化合成工艺条件下,经六步反应合成N-乙基间甲氧基苯胺,产率达到65。