Results 81 to 90 of about 1,311 (206)

Ethyl 4-(2-fluorophenyl)-6-methyl-2-thioxo-1-(p-tolyl)-1,2,3,4-tetrahydropyrimidine-5-carboxylate

Molbank, 2018
The Biginelli reaction is a highly versatile reaction that leads to dihydropyrimidinones/thiones. This scaffold is reported as being a privileged structure due to its ability to interact with biological targets.
Itamar Luís Gonçalves, Luciano Porto Kagami, Gustavo Machado das Neves, Liliana Rockenbach, Leonardo Davi, Alceu Felipe Soares, Solange Cristina Garcia, Vera Lucia Eifler-Lima   +7 more
doaj   +1 more source

MICROWAVE IRRADIATED GREEN BIGINELLI REACTION†EMPLOYING APPLE, POMEGRANATE AND GRAPE JUICE AS ECO-FRIENDLY REACTION MEDIUM [PDF]

, 2016
Objective: The main objective of this work is to explore the utility of apple, pomegranate and grape juice as an eco-friendly reaction medium for microwave assisted green Biginelli reaction.Methods: A series of Biginelli reactions were carried out in ...
Padan, Simarjit Kaur, Pramanik, Tanay
core   +1 more source

Recent developments in chemical reactivity of N,N-dimethylenamino ketones as synthons for various heterocycles [PDF]

, 2017
The current review presents recent progress in the utility of N,N-dimethyl enaminones as building blocks for a diverse range of acyclic, carbocyclic, five- and six-membered heterocyclic a broad range of heterocyclic and fused heterocyclic derivatives ...
Abbas, Abdallah, Abdallah, Abdallah, Abdel-Khalik, Abdel-Khalik, Abdel-Khalik, Abdel-Megid, Abdel-Motaleb, Abdel-Motaleb, Abdelhamid, Abdelhamid, AbdelKhalik, Abu-Shanab, Abu-Shanab, Adams, Agamy, Agamy, Al-Awadi, Al-Awadi, Al-Awadi, Al-Enezi, Al-Etaibi, Al-Mousawi, Al-Mousawi, Al-Mousawi, Al-Mousawi, Al-Mousawi, Al-Mousawi, Al-Mousawi, Al-Omran, Al-Omran, Al-Omran, Al-Omran, Al-Omran, Al-Omran, Al-Omran, Al-Omran, Al-Saleh, Al-Saleh, Al-Saleh, Al-Saleh, Al-Saleh, Al-Saleh, Al-Saleh, Al-Saleh, Al-Shiekh, Al-Shiekh, Al-Shiekh, Al-Zaydi, Al-Zaydi, Al-Zaydi, Al-Zaydi, Al-Zaydi, Al-Zaydi, Al-Zaydi, Alinezhad, Alinezhad, Almazroa, Anwer, Behbehani, Cao, Dawood, Domínguez, El-Desoky, El-Dusouqui, El-Taweel, Eldebss, Elghamry, Farghaly, Figueiredo, Gaber, Gaber, Gaber, Gaber, Gaber, Gaber, Gad-Elkareem, Gad-Elkareem, Ghozlan, Ghozlan, Ghozlan, Gomha, Gomha, Gomha, Gomha, Gomha, Greenhill, Hassanien, Hassanien, Hassanien, Hernández, Ho, Ho, Ho, Hughes, Ibrahim, Igarashi, Ingham, Jiang, Kandeel, Kantevari, Kascheres, Katritzky, Katritzky, Kenawi, Kepe, Kepe, Kim, Kirschbaum, Liu, Lue, Macba, Macba, Makhseed, Manley, Martins, Michael, Mokhtar, Mousawi, Moustafa, Mukhanova, Murphy, Negri, Nishimura, Nishiyama, Pichon, Pigge, Pleier, Raghunadh, Rasmussen, Reidlinger, Sabnis, Saleh, Salomone, Schenone, Shaaban, Shankaraiah, Sherif, Toche, Tois, Trautwein, Verma, Wan, Wan, Wan, Wan, Wan, Wang, Witherington, Xiang, Zhao, Zhou, Šimůnek   +153 more
core   +1 more source

Synthesis of diverse dihydropyrimidine-related scaffolds by fluorous benzaldehyde-based Biginelli reaction and post-condensation modifications

Beilstein Journal of Organic Chemistry, 2011
Dihydropyrimidinones and dihydropyrimidinethiones generated from the Biginelli reactions of perfluorooctanesulfonyl-attached benzaldehydes are used as common intermediates for post-condensation modifications such as cycloaddition, Liebeskind–Srogl ...
Bruno Piqani, Wei Zhang
doaj   +1 more source

EASY SYNTHESIS OF 3,4-DIHYDROPYRIMIDIN -2-(1H)-ONES USING PHOSPHATE FERTILIZERS MAP, DAP AND TSP AS EFFICIENT CATALYSTS

Journal of the Turkish Chemical Society, Section A: Chemistry, 2017
A simple, efficient and green procedure has been developed for the synthesis of dihydropyrimidinones (Products of Biginelli) using phosphate fertilizers (mono-ammonium phosphate (MAP), di-ammonium phosphate (DAP) and triple super phosphate (TSP)) as ...
Sarra SIBOUS, Said BOUKHRIS, Rachida GHAILANE, Nouzha HABBADI, Amina HASSIKOU, Abdelaziz SOUIZI   +5 more
doaj   +1 more source

Studies on some Bio-active Organic Compounds [PDF]

, 2009
Not ...
Bhalodia, Rahulkumar H.
core  

A microwave-assisted synthesis of 3,4-dihydropyrimidin-2(1H)-one/thione derivatives using nanocrystalline MgFe2O4 as catalyst [PDF]

, 2014
3,4-Dihydropyrimidin-2(1H)-one/thione derivatives were synthesized in moderate to high yields via one-pot three component Biginelli reaction of aldehydes, ethyl acetoacetate and urea/thiourea in the presence of nanocrystalline MgFe2O4 as an efficient ...
Aswar, Anand Shankarrao, Bhaskar, Ravindra Sakharam, Ladole, Chandrashekhar Arunrao, Salunkhe, Nilesh Govindrao   +3 more
core   +1 more source

Secondary amine-initiated three-component synthesis of 3,4-dihydropyrimidinones and thiones involving alkynes, aldehydes and thiourea/urea

Beilstein Journal of Organic Chemistry, 2014
The three-component reactions of aldehydes, electron deficient alkynes and ureas/thioureas have been smoothly performed to yield a class of unprecedented 3,4-dihydropyrimidinones and thiones (DHPMs).
Jie-Ping Wan, Yunfang Lin, Kaikai Hu, Yunyun Liu   +3 more
doaj   +1 more source

MICROWAVE ASSISTED GREEN SYNTHESIS OF PHARMACEUTICALLY IMPORTANT DIHYDROPYRIMIDINONES IN FRUIT JUICE MEDIUM [PDF]

, 2015
Objective: The objective of this research project was to perform the green synthesis of a series of Dihydropyrimidinone (DHPM) derivatives which are having immense importance in biological and pharmaceutical science, via microwave assisted Biginelli ...
Maji, Poulami, Pramanik, Tanay
core  

A Green and Efficient Method for the Preparation of 3,4-Dihydropyrimidin-2(1 H [PDF]

, 2013
A variety of 3,4-dihydropyrimidin-2(1H)-ones derivatives were synthesized via three-component Biginelli reaction. The quaternary ammonium-treated clay-catalyzed process proved to be simple, efficient, and environmentally ...
Sedigheh Jahanbakhshi, Soheil Sayyahi, Zahra Dehghani   +2 more
core   +2 more sources