Results 101 to 108 of about 136 (108)
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Letters in Organic Chemistry, 2013
A simple, efficient and ecofriendly procedure for the synthesis of tetrahydrobenzo[b]pyran derivatives using triphenylphosphine as catalyst under aqueous conditions has been developed. This new method has some advantages like the easy experimental protocol, shorter reaction time, higher yields and is benign for the environment with using water as ...
Ghalem, Wassima +5 more
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A simple, efficient and ecofriendly procedure for the synthesis of tetrahydrobenzo[b]pyran derivatives using triphenylphosphine as catalyst under aqueous conditions has been developed. This new method has some advantages like the easy experimental protocol, shorter reaction time, higher yields and is benign for the environment with using water as ...
Ghalem, Wassima +5 more
openaire +2 more sources
2016
The kinetics and mechanism of the reaction between benzaldehyde 1, malononitrile 2 and dimedone 3 in a mixture of ethanol and water as solvents in the presence of fructose as a biodegradable catalyst has been studied by the spectroscopic method (UV-Vis spectrophotometry method).
Habibi-khorassani, Sayeydmosatfa +3 more
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The kinetics and mechanism of the reaction between benzaldehyde 1, malononitrile 2 and dimedone 3 in a mixture of ethanol and water as solvents in the presence of fructose as a biodegradable catalyst has been studied by the spectroscopic method (UV-Vis spectrophotometry method).
Habibi-khorassani, Sayeydmosatfa +3 more
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Research on Chemical Intermediates, 2015
Various 4H-benzo[b]pyran derivatives were synthesized via a one-pot three-component condensation of arylaldehyde, malononitrile and dimedone in water using β-cyclodextrin (β-CD) as an efficient catalyst. This method provides several advantages, including mild reaction conditions, operational simplicity, high yields and minimal pollution of the ...
Jun Lu, Xue-wen Fu, Ge Zhang, Chun Wang
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Various 4H-benzo[b]pyran derivatives were synthesized via a one-pot three-component condensation of arylaldehyde, malononitrile and dimedone in water using β-cyclodextrin (β-CD) as an efficient catalyst. This method provides several advantages, including mild reaction conditions, operational simplicity, high yields and minimal pollution of the ...
Jun Lu, Xue-wen Fu, Ge Zhang, Chun Wang
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Modified Agro Waste-Derived Nano-silica for Synthesizing Tetrahydrobenzo[b]pyrans
Catalysis Surveys from Asia, 2023Pouya Taheri +2 more
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Mechanistic Studies on the Three Component Synthesis of Tetrahydrobenzo[ b]pyran Catalyzed by Agar
Current Organocatalysis, 2015Osman Asheri +2 more
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Facile and Efficient Access to Tetrahydrobenzo[b]pyrans Catalyzed by N,N-Dimethylbenzylamine
HETEROCYCLES, 2016Hamzeh Kiyani, Mozhgan Sadat Jalali
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One-Pot Synthesis of Tetrahydrobenzo-b-pyran Derivatives in Aqueous Media
有机化学, 2004openaire +1 more source