PYRAN相关论文
A General Synthetic Route to Functionalized 6-Phenyl-6H-Dibenzo[b,d] pyran Derivatives from 3-Nitro-
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Synthesis,Crystal Structure and Anti-tumor Activity of Ethyl 3-(4-methoxyphenyl)-4-oxo-3,3a,4,6-tetr
The title compound(ethyl 3-(4-methoxyphenyl)-4-oxo-3,3a,4,6-tetrahydro-1H-furo[3,4-c]pyran-3a-carboxylate) has been synt......
CuO–CeO2 is reported as a highly efficient and green recyclable catalyst,for the multicomponent synthesis of 4H-benzo[b......
H_6P_2W_(18)O_(62)á18H_2O: A green and reusable catalyst for one-pot synthesis of pyrano[4,3-b]pyran
A convenient,effcient and environmentally benign procedure has been developed for the synthesis of pyrano[4,3-b]pyran de......
Tetrahydrobenzo[b]pyran and 3,4-dihydropyrano[c]chromene derivatives were synthesized via a one-pot three-component cond......
Synthesis, Crystal Structure and Properties of Ethyl 3,9-Dimethyl-7-phenyl-6H-dibenzo[b,d]pyran-6-on
Ethyl 3,9-dimethyl-7-phenyl-6H-dibenzo[b,d]pyran-6-one-8-carboxylate(C24H20O4, Mr = 372.40) has been synthesized and its......
A cesium fluoride promoted efficient and rapid multicomponent synthesis of functionalized 2-amino-3-
A rapid, one-pot and highly efficient protocol for the synthesis of pharmaceutically interesting functionalized 2-amino-......
4-(Succinimido)-1-butane sulfonic acid was shown to be an efficient and reusable Brnsted acid catalyst for the synthes......
4-(Succinimido)-1-butane sulfonic acid as a Bronsted acid catalyst for synthesis of pyrano[4,3-b]pyr
4-(Succinimido)-1-butane sulfonic acid as an efficient and reusable Bronsted acid catalyzed the synthesis of pyrano[4,3-......
A convenient and efficient approach for difluoroalkyl-containing g-butyrolactones via the radical addition reaction of i......
A series of pyrano[4,3‐b]pyran derivatives have been synthesized in excellent yields by the reaction of aromatic aldehy......
Fructose was used as an efficient catalyst for three-component condensation reactions of aryl aldehydes,malononitrile,an......
Two novel pyran annulated heterocyclic compounds(1 and 2) were synthesized and characterized via IR, 1H NMR and H RMS. T......
A convenient approach for the preparation of(1S,3’R.4’S,5’S,6’R)-5-chloro-6-[(4-ethylphenyl)methyl]- 3’,4’,5’,6’......
Silica‐bonded N‐propylpiperazine sodium n‐propionate(SBPPSP) was found to act as an efficient solid base for the prep......
PS-TBD triggered general protocol for the synthesis of 4H-chromene,pyrano[4,3-b]pyran and pyrano[3,2
A general protocol has been developed for the facile construction of titled derivatives via three component reaction bet......
Neopeapyran, an unusual furo[2,3b]pyran analogue and turnagainolide C from a soil Streptomyces sp. S
Neopeapyran(1),an unusual furo[2,3b]pyran analogue,together with a new cyclopeptide,turnagainolide C(2),were isolated fr......
A novel colorimetric and ratiometric NIR fluorescent sensor for glutathione based on dicyanomethylen
Glutathione(GSH)plays a critical role in maintaining oxidation-reduction homeostasis in biological systems.Considering t......
Effcient transesterifcation resolution of 2-(4-chlorophenyl)-4-hydroxytetrahydropyran with magnetica
We report an effcient kinetic resolution of racemic 2-(4-chlorophenyl)-4-hydroxytetrahydro-pyran(CLP-4-HTHP)via Pseudomo......
Cetyltrimethylammonium chloride(CTAC) catalyzed one-pot synthesis of novel coumarin-4H-pyran conjuga
Novel fluorescent coumarin-4H-pyran conjugates were achieved by three-component reactions of various synthetic β-ketoes......
Efficient and mild cyclization procedures for the synthesis of novel 2-amino-4H-pyran derivatives wi
A series of novel 2-amino-4H-pyran derivatives have been synthesized via a three-component reaction of a, b-unsaturated ......
An facile and efficient protocol for the synthesis of 13‐aryl‐indeno[1,2‐b]naphtha[1,2‐e]pyran‐ 12(13H)‐ ones has ......
Nano-CaO was prepared by calcination of ball-milled chicken eggshell waste.This novel,bioactive,heterogeneous catalyst,w......
A Density Functional Theory Study on Electronic Structure and Second-order Nonlinear Optical Propert
Time dependent density functional theory (TDDFT) has been applied to calculate the electronic structure and second or......
Conversion of 3-Carbethoxy-4-methyl Coumarin Derivatives into Several New Annelated Coumarin Derivat
The reaction of ethyl esters of 4-methyl-2-oxo-2H-1-benzo (naphtho) pyran-3-carboxylic acids (1) with aromatic aldehydes......
Synthesis of Dendritic Schiff Base Ligands for Titanium Catalyzed Enantioselective HDA Reaction of D
A new type of dendritic NOBIN derived Schiff base ligands hasbeen synthesized and applied to titanium catalyzed hetero-......
The photooxygenation of 3,4-dihydro-2H-pyran sensitized by cyanoanthracenes(9, 10-dicyanoanthracene and 9-cyanoanthrace......
α-烃基-δ-戊内酯(α-alkyl-δ-valerolactone或tetrahydro-2 H-pyran-2-one-3-alkyl)是有机合成的重要中间体。亲核试剂和它反......
A Mild and Practical Procedure for Tetrahydropyranylation of Alcohols and Phenols Catalysed by Anhyd
An easy preparation of tetrahydropyranyl (THP) ethers of alcohols andphenols with 3,4-dihydro-2H-pyran (DHP) in refluxin......
Synthesis of a novel series of N-pyrandione substituted amino acids and their esters 3 via a condensation reaction betwe......
The photochromic properties and reaction mechanism of title compounds have been examined with steady method on compounds......
Synthesis and Crystal Structure of 7,7- Dimethyl-2-amino-3-cyano-4-(3,4-methylenedioxylphenyl)- 5-ox
The title compound 7,7-dimethyl-2-amino-3-cyano-4-(3,4-methylene- dioxylphenyl)-5-oxo-5,6,7,8-tetrahydro-4H-benzo-[b]-py......
Synthesis and Crystal Structure of Methyl(7,7-Dimethyl-2-amino-4-(4-chlorophenyl)-5-oxo-5,6,7,8-tetr
The title compound methyl (7,7-dimemyl-2-amino-4-(4-chlorophenyl)-5-oxo-5,6,7,8-tetrahydro-4H-benzo-[b]-pyran-3-yl) carb......
The first enantioselective total synthesis of 5-acetoxygoniothalamin 1 and 5-acetoxyisogoniothalamin oxide 2 was achieve......
Michael Addition Reaction without Catalyst: The Synthesis of 2-Amino-5, 6, 7, 8-tetrahydro-5-oxo-4-a
A series of tetrahydrobenzo-[b]-pyran derivative was synthesized by the reaction of arylmethylene malononitrile or arylm......
A kind of efficient non-doped white organic light-emitting diodes(WOLEDs) were realized by using a bright blue-emitting ......
茉莉(Jasmine) 产品名称为“Jasfloral”(乙酸四氢-3-戊基-2H-吡喃-4-酯,tetrahydro-3-pentyl-2H-pyran-4-yl acetate,CAS# 18871-......
Sensitized photooxygenation~+——VI. Kinetic studies on the singlet oxygenation of 6-ethyl-3,4-dihydro
Kinetic studies of the singlet oxygenation of the title compounds were performed accord-ing to Monroe’s method. The re......
The 2-C,methylene group of 1-aroyl-1,2-dihydro-3H-naphtho[2,1-b]pyran-3-ones(2)have been showed to possess a superior r......
The title compound was synthesized by the reaction of adipyl chloride with cyclohexanone piperidine enamine and its stru......
期刊
Two new indolinospirobensopyrans bearing monoaza-benzo-15-C-5 were synthesized. And they were determined by IR, ~1H NMR ......
The title compound 1 was synthesized from 1.2:5,6-dianhydro-3,4-dianhydro-3,4-isopropylideneD-mannitol 2 through four st......
Synthesis of the Acetate of a New Phenolic Glycoside,Anacardoside,from Semecarpus anacardium and its
the acetate of a novel phenolic glycoside, 1 -O- β- D-glucopyranosyl- (1 → 6 ) - β-D-glucopyranosyloxy- 3 -hydroxy-5 ......
A new pregnane glycoside hypoglaucin G was isolated from Dioscorea collettii var.hypoglauca by bioactivity-guided fracti......
From the leaves of Rhododendron latoucheae (Ericaceae). two new natural phenolic compounds named (+)-rhodolatouchol 1 an......
报道了采用溴氧化3-异丙烯基(艹卓)酚酮和3-肉桂酰基(艹卓)酚酮合成杂环并(艹卓)酮化合物的新方法。3-异丙烯基(艹卓)酚酮5位偶联......
Condensation Reaction of 5,6-Dihydro-6-methyl-6-piperonyl-2H-pyran-2,4-dione, Ethyl Orthoformate and
Piperonyl methyl ketone was obtained by oxidizing isosafrole with hydrogen peroxide and formic acid. Dianion of ethyl a......
通过[PPh4][(mthp S)WS3](mthp=2 methyltetrahydro 2H pyran)和三当量CuBr反应合成了一个新的T型簇合物[PPh4]2[WS4(CuBr)2.6],用......
以微乳化法制备的二氧化硅担载的的杂多酸催化剂Cu-H4SiW12O40在室温下能瞬间催化四氢吡喃化反应。且催化剂在至少重复使用四次而......
