二氢呋喃,dihydronfuran英语短句,例句大全

二氢呋喃,dihydronfuran
1)dihydronfuran二氢呋喃
1.In the first two parts of this thesis mainly focused on carbon radical reaction promoted by Manganses(Ⅲ):(1) Mn(acac)3 reacted with nitroalkenes underwent ligand-transferring process to synthesize dihydronfuran derivatives, which were further deoxidized of the nitro-group to obtain varies of pyrrole derivatives.本文分为三个部分,前两部分主要介绍了三价锰引发碳自由基反应:(1)Mn(acac)_3与β-硝基烯通过配体转移反应合成二氢呋喃类化合物,并对二氢呋喃中的硝基进行还原,高产率的合成吡咯衍生物。

英文短句/例句

1.The Studies on the Syntheses of 1, 4-Benzodioxane Neolignan Derivatives and Dihydrobenzofuran Neolignan Derivatives with Biological Activities;生理活性苯并二噁烷和苯并二氢呋喃新木脂素衍生物合成
2.Synthesis of α-Furanacrylic Esters with Monometallic Sodium Orthophosphate as Catalyst磷酸二氢钠催化合成α-呋喃丙烯酸酯
3.Gas-phase Cyclodehydration of 1,4-Butanediol into Tetrahydrofuran1,4-丁二醇气相环化脱水合成四氢呋喃
4.Synthesis and Insecticidal Activity of the Dihydroagarofuran Derivatives;双呋喃二氢沉香呋喃衍生物的合成及其杀虫活性
5.Fast increase in demand of tetrahydrofuran and poly-tetrahydrofuran;四氢呋喃和聚四氢呋喃需求快速增长
6.3,3-dihydro-2,2-dimethyl-7-benzofuranyl methylcarbamate３,３－二氢－２,２－二甲基－７－苯并呋喃基－甲基氨基甲酸酯
7.The Ring-opening Polymerization of PDO with PTHF Acts as Macroinitiator;聚四氢呋喃引发对二氧环己酮开环聚合的研究
8.Electrospinning of polyurethane solution based on tetrahydrofuran/N,N-dimethyl formamide基于四氢呋喃/二甲基甲酰胺的聚氨酯静电纺丝
9.Synthesis, Characterization and Catalytic Activity of Divalent Lanthanide Complexes with Furfuryl-and Tetrahydrofurfuryl-Functionalized Indenyl Ligands;含呋喃、四氢呋喃取代茚基二价稀土配合物的合成、表征与催化活性研究
10.The catalysis of big pore strong acid resin for1,4- butanediol dehydration to tetrahydrofuran is investigated.考察了大孔强酸性树脂对1,4丁二醇脱水制四氢呋喃的催化作用。
11.Stereoselective and Enantioselective Synthesis of Trans-2, 5-disubstituted Tetrahydrofurans反式-2，5-二取代四氢呋喃的立体选择性和对映选择性合成
12.The catalysis of big pore strong acid resin for 1,4-butanediol dehydration to tetrahydrofuran is investigated.考察了大孔强酸性树脂对1,4 丁二醇脱水制四氢呋喃的催化作用。
13.Solubility of 1,2-Ethylenediamine、Pyridine Triethylamine、Tetrahydrofuran in Water and Technological Process Research of Tetrahydrofuran;乙二胺、三乙胺、四氢呋喃、吡啶在水中的溶解度及其工程治理
14.Synthesis and Insecticidal Activity of the Hepthydroxy-β-dihydroagarofuran Derivatives;七羟基-β-二氢沉香呋喃衍生物的合成及其杀虫活性
15.Polymerization of Acrylonitrile Catalyzed by Cyclopentadienyl Sodium /Tetrahydrofuran System;环戊二烯钠/四氢呋喃体系催化丙烯腈聚合反应研究
16.Fractionation and structure identification of β-dihydroagarofuan polyolesters from Celastrus angulatus苦皮藤β-二氢沉香呋喃多元醇酯类化合物分离及结构解析
17.Catalytic Synthesis of Polytetrahydrofuran by Phosphotungstic Heteropoly Acid Supported on Mesoporous Silica介孔二氧化硅负载磷钨杂多酸催化合成聚四氢呋喃
18.Vapor--Liquid Equilibrium Data for Methanol-Tetrahydrofuran-Potassium Acetate System甲醇-四氢呋喃-乙酸钾体系汽液平衡

相关短句/例句

2,5-dihydrofuran2,5-二氢呋喃
1.The reaction mechanism for synthesis of 2,5-dihydrofuran by the ring closing reaction of 2-butene-1,4-diol using acidic resin as catalyst was studied.提出1,4-丁烯二醇在酸性条件下脱水关环制备2,5-二氢呋喃的反应机理。
3)2,3-Dihydrogenfuran2,3-二氢呋喃
4)2,5-Furandione, dihydro-二氢-2,5-呋喃二酮
5)β-dihydroagarofuranβ-二氢沉香呋喃
1.The Circular Dichroism of Some β-Dihydroagarofuran Polyesters;几个β-二氢沉香呋喃多醇酯的CD谱研究
2.In order to find new active compounds,the structure of 1β,2β,4α,6α,8β,9α,13-hepthydroxy-β-dihydroagarofuran was simplified to be 1β,4α,6α,9α-tetrahydroxy-2β,12-ether-β-dihydroagarofuran,and seven new dihydroagarofuran ether analogues were synthesized using 1β,4α,6α,9α-tetrahydroxy-2β,12-ether-β-dihydroagarofuran as staring materials.提取物水解产物中的1β,2β,4α,6α,8β,9α,13-七羟基-β-二氢沉香呋喃为起始原料,先经过甲基磺酸酯保护后再用氢化铝锂还原,得到一结构新颖的双呋喃二氢沉香呋喃倍半萜(化合物S),并以此为原料设计合成了7个未见文献报道的双呋喃二氢沉香呋喃醚类衍生物(a～g),其结构经核磁共振谱、红外光谱、高分辨质谱等方法确证。
3.Based on the data in literatures and our research results in recent years, the paper dis cussed the α,β,γeffects on the 13C NMR and stereochemisry of β-dihydroagarofuran when the parent skeleton was substituted by acyloxy or hydroxy groups at the pdgitions C2,C4,C6,C8 and C13 which would be very useful for the research on the new chemical structures of this kind of compounds.本文结合作者近年的研究，讨论了β-二氢沉香呋喃倍半萜的13CNMR取代规律及其有关的立体化学问题，这对于进一步研究该类天然产物的化学结构有重要参考价值。
6)dihydrofuran二氢呋喃衍生物
1.Arsonium bromides 1 reacted with electron-deficient olefins containing one p-trifluoromethyl-phenyl and two other electron withdrawing groups 2 or 3 in the presence of K2CO3 to form cis-1,2-cyclo-propane or cis-2,3-dihydrofuran derivatives containing the p-trifluoromethylphenyl group 4 or 5 in high yields with high stereoselectivity.鉮盐1以碳酸钾为碱分别与含对三氟甲基苯基及双吸电子基团的烯烃2或3反应,高产率、高立体选择性地合成了含对三氟甲基苯基的顺-1,2-环丙烷衍生物4或顺-2,3-二氢呋喃衍生物5,并对其产物结构进行了确证。