4H-benzo[b]pyran
![Mnso4.4H2O: A Novel And Inexpensive Catalyst For The One-Pot Multicomponent Synthesis Of 4H-Benzo[B]Pyran Derivatives](data:image/gif;base64,R0lGODlhAQABAIAAAP///wAAACH5BAEAAAAALAAAAAABAAEAAAICRAEAOw==)
Mnso4.4H2O: A Novel And Inexpensive Catalyst For The One-Pot Multicomponent Synthesis Of 4H-Benzo[B]Pyran Derivatives
... of 4H-benzo[b]pyran derivatives owing to their pronounced pharmacological and biological activities ...of 4H-benzo[b]pyran derivatives has been achieved by the ...
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Ethyl 2 amino 4 (4 fluorophenyl) 7,7 dimethyl 5 oxo 5,6,7,8 tetrahydro 4H benzo[b]pyran 3 carboxylate
... The pyran ring adopts a boat conformation (Fig. 1 and Table 1); atoms C8, C13, C14 and C15 are coplanar, with atoms O1 and C7 deviating from the plane by 0.120 (1) and 0.258 (1) AÊ, respectively. A similar ...
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2 Anilino 3 benzoyl 4 (2,5 dichlorophenyl) 7,7 dimethyl 5 oxo 5,6,7,8 tetrahydro 4H benzo[b]pyran
... Many 4H-benzo[b]pyran derivatives have been reported to show various biological activities (Hassanien et al.,1999), such as the cure of lower blood sugar (Jiang et al., 2001), mammary cancer ...
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A GREEN APPROACH FOR THE SYNTHESIS OF 2-AMINO-4H-BENZO [B] PYRAN DERIVATIVES USING DBU AS AN EFFICIENT CATALYST
... over environmental degradation, the use of environmentally benign solvents like water become most essential. Multicomponent reactions have become very popular in the discovery of biologically active novel compounds ...
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Investigation of Eletrooxidation Reaction of Some Tetrahydrobenzo[b]pyran Derivatives
... years, 4H-benzo[b]pyran and their derivatives have attracted strong interest due to their useful biological and pharmacological properties, such as anticoagulant, spasmolytic, diuretic, ...
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Clean and green synthesis of structurally diverse 4H-benzo[b]pyrans derivatives in water
... functionalized 4H-benzo[b]pyran ...corresponding 4H-benzo[b]pyrane derivatives were obtained in good excellent yield under optimized reaction ...
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Bis sulfamic acid functionalized magnetic nanoparticles as a retrievable nanocatalyst for the green synthesis of polyhydroquinolines and tetrahydrobenzopyrans
... In conclusion, we have described a successful preparation of bissulfamic acid-functionalized magnetic nanoparticles as an efficient, magnetically separable and reusable heterogeneous catalyst. We have considered also ...
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Grindstone Chemistry: An Efficient and Green Synthesis of 2-Amino-4H-benzo[b]pyrans
... The generality and functional group tolerance of this procedure in the direct synthesis of 2- amino-4H-benzo[b]pyran derivatives 4 were examined using a number of substituted aromatic ...
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Design, Synthesis, Antitumor Activity, Cell Cycle Analysis and ELISA Assay for CDK 2 of a New (4 Aryl 6 Flouro 4H Benzo [4, 5] Thieno [3, 2 b] Pyran) Derivatives
... For adherent cells, the assay is terminated by the addition of cold TCA. Cells are fixed in situ by the gentle addition of 50 μl of cold 50% (w/v) TCA (final concentration, 10% TCA) and incubated for 60 min at 4°C. The ...
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Crystal structure of ethyl 2 amino 4 (4 chlorophenyl) 4H 1 benzothieno[3,2 b]pyran 3 carboxylate
... In a 100 ml flask equipped with a condenser was dissolved 4 mmol of (Z)-2-(4-chlorobenzylidene)-1-benzo[b]thio- phen-3(2H)-one and 5 mmol of ethyl cyanoacetate in 30 ml of ethanol. Then, 1 ml of piperidine ...
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Crystal structure of ethyl 2 amino 4 (4 methoxyphenyl) 4H 1 benzothieno[3,2 b]pyran 3 carboxylate
... Substituted 2-amino-4-aryl-4H-pyran derivatives are an important class of heterocyclic compounds, which frequently exhibit a wide range of biological properties viz. antiproliferative, antitubercular ...
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Ethyl 2 amino 4 (3 nitrophenyl) 4H 1 benzothieno[3,2 b]pyran 3 carboxylate
... In a 100 ml flask equipped with a condenser was dissolved 4 mmol of (Z)-2-(3-nitrobenzylidene)-1-benzo[b]thio- phen-3(2H)-one and 5 mmol of ethyl cyanoacetate in 30 ml of ethanol. Then, 1 ml of piperidine ...
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Crystal structure of 2 amino 3 cyano 4 (4 methoxyphenyl) 4H 1 benzothieno[3,2 b]pyran
... In a 100 mL flask equipped with a condenser was dissolved 4 mmol of (Z)-2-(4-methoxybenzylidene)-1-benzo[b]thio- phen-3(2H)-one and 5 mmol of malononitrile in 30 mL of ethanol. Then, 1 mL of piperidine was ...
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Crystal structures of two 4H chromene derivatives: 2 amino 3 cyano 4 (3,4 dichlorophenyl) 7 hydroxy 4H benzo[1,2 b]pyran 1,4 dioxane monosolvate and 2 amino 3 cyano 4 (2,6 dichlorophenyl) 7 hydroxy 4H benzo[1,2 b]pyran
... 2-Amino-4H-benzo[1,2-b]pyrans (2-amino-4H-chromenes) act as synthetic building blocks for the design of various pyran-containing bio-active molecules (Kale et al., 2013; Sabry et al., ...
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Crystal structure, DFT and Hirshfeld surface analysis of 2 amino 4 (2 chlorophenyl) 7 hydroxy 4H benzo[1,2 b]pyran 3 carbonitrile
... In the benzopyran system, the attached carbonitrile, amino and hydroxy groups lie in the same plane, with a maximum deviation for atom N2 of 0.053 (2) A ˚ . The sum of the bond angles around atom N1 of the pyran ...
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GC MS DETERMINATION OF BIOACTIVE CONSTITUENTS OF FURCREAEA FOETIDA LEAF
... Chemical compound and Name 4H-Pyran-4-one, 2,3-dihydro-3,5-dihydroxy-6methyl1-Methyl-2-Pyrrolidiniumcarboxylate Caryophyllene $$ Bicyclo[7.2.0]undec-4-ene, 4,11,11-trimethyl-8-methylene-[r] ...
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Crystal structure of (Z) 2 benzylidene 4 methyl 2H benzo[b][1,4]thiazin 3(4H) one
... For background to the pharmacological activity and potential applications of benzothiazines, see: Schiaffella et al. (2006); Gupta et al. (2009); Armenise et al. (2000); Bansode et al. (2009); Dixit et al. (2009); Dixit ...
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Synthesis, Characterization and Biological activity of 1,3,4- Oxadiazole and 1,3,4- Thiadiazole Derivatives.
... Fig: acetyl-5-3-chloro-1 benzo [b]thiophen-2-yl-2-substituted phenyl-2,3-dihydro-1,3,4oxadiazoles and 2-3-chloro-1-benzo[b] thiophen-2-yl-5-substituted phenyl-1,3,4- oxadiazole derivativ[r] ...
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Ethyl 2 amino 4 phenyl 4H benzo[h]chromene 3 carboxylate
... Benzopyrans and their derivatives exhibit useful biological and pharmacological properties (Morianka & Takahashi, 1977), acting as antisterility (Brooks, 1988) and anticancer agents (Hyana & Saimoto, 1987). In ...
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2 Amino 4 (4 methoxyphenyl) 4H benzo[h]chromene 3 carbonitrile
... Benzopyrans and their derivatives are important in natural and synthetic organic chemistry owing to their biological and pharmacological properties (Morianka & Takahashi, 1977), such as antisterility (Brooks, 1998) ...
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