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......
研究了4H-pyrans,fulvenes,siloles等环状多烯结构的小分子荧光染料在溶液,固态及薄层层析板上的荧光发射行为.与大多数传统的荧光......
研究了4H-pyrans,fulvenes,siloles等环状多烯结构的小分子荧光染料在溶液,固态及薄层层析板上的荧光发射行为.与大多数传统的荧光......
综述了近年来在有机光致变色领域所取得的成就,主要包括螺嗪类化合物、吡喃类化合物、俘精酸酐及其衍生物、新型二芳基乙烯和质子......
<正>1前言在OLEDs显示的市场上,人们普遍把红色荧光染料4-（dicyanomethylene）-2-t-butyl-6（1,1,7,7-tetramethyljulolidyl-9-enyl）-4H-......
两种新的４－二氰亚甲基－２，６－二甲基－４Ｈ－吡喃衍生物及对应的聚酰胺酸被合成和表征。该聚酰胺酸在普通有机溶剂中具有良好的可溶性。报道了这些生......
