Results 71 to 80 of about 4,994 (242)

A flexible radical approach to 5-substituted 4,5-dihydro-3H-pyrido[4,3-b]azepin-2-ones. Some mechanistic observations on the radical cyclisation-aromatisation process

, 2012
International audienceVariously substituted novel dihydropyridoazepinones have been prepared by an intermolecular radical addition followed by a radical cyclisation on a pyridine ring. The latter process involved the use of a combination of two different
Botez, I., Petit, Laurent, Tizot, A., Zard, Samir,   +3 more
core   +3 more sources

Green Synthesis of Pyrazol‑chromeno[2,3‑d]pyrimidinones Using SBA-Pr-SO3H as an Efficient Nanocatalyst [PDF]

Iranian Journal of Chemistry & Chemical Engineering, 2017
Hexagonal mesoporous silica (SBA-15) was prepared and then functionalized by(3-mercaptopropyl)trimethoxysilane. The obtained 3-mercaptopropyl functionalized SBA-15 (SBA-Pr-SH) was then oxidized using H2O2 in methanol under an acidic condition to give ...
Ghodsi Mohammadi Ziarani, Fatemeh Saidian, Parisa Gholamzadeh, Alireza Badiei, Ali Abolhasani Soorki   +4 more
doaj  

One-Pot Eco-Safe Saccharin-Catalyzed Procedure for Expedient and Convenient Synthesis of Dihydropyrano[2,3-c]pyrazole, Tetrahydrobenzo[b]pyran and Pyrano[2,3-d]pyrimidinone Scaffolds as a Green and Versatile Catalyst

Indonesian Journal of Chemistry, 2018
A green and facile saccharin-catalyzed procedure is developed for the one-pot convenient synthesis of dihydropyrano[2,3-c]pyrazole, tetrahydrobenzo[b]pyran and pyrano[2,3-d]pyrimidinone scaffolds via multi-component tandem Knoevenagel cyclocondensation ...
Farzaneh Mohamadpour, Mojtaba Lashkari, Nourallah Hazeri   +2 more
doaj   +1 more source

Pentafluorophenylammonium triflate (PFPAT) catalyzed facile construction of substituted chromeno[2,3-d]pyrimidinone derivatives and their antimicrobial activity

Journal of Advanced Research, 2014
A new, simple thermally efficient and solvent-free condensation of 2-amino-3-cyano-6-methyl-4-phenyl-4H-pyran-5-ethylcarboxylate derivatives with coumarin-3-carboxylic acid employing pentafluorophenylammonium triflate (PFPAT) as an inexpensive ...
Majid Ghashang, Syed Sheik Mansoor, Krishnamoorthy Aswin   +2 more
doaj   +1 more source

RECENT ADVANCES IN METAL-CATALYZED C-H FUNCTIONALIZATION OF PYRIMIDINONES, QUINAZOLINONES AND FUSED QUINAZOLINONES [PDF]

, 2018
International audienceThis review emphasises the recent developments in metal-catalyzed functionalization using direct C-H bond activation of pyrimidinones (uracils), quinazolinones and quinazolinone-based fused poly-N-heterocycles as well as metal ...
Besson, Thierry, Fruit, Corinne
core   +3 more sources

Diels-alder cycloaddition of 2-azadienes to methyl 2-(2,6-dichlorophenyl)-2H-azirine-3-carboxylate in the synthesis of methyl 4-oxo-1,3-diazabicyclo[4.1.0]heptane-6-carboxylates [PDF]

, 2004
A number of fused 4-oxo-1,3-diazabicyclo[4.1.0]heptane-6-carboxylates, a new type of compound, have been obtained by Diels-Alder cycloaddition between nucleophilic 2-azadienes and an electrophilic 2H-azirine.
Alves, M. José, Durães, M. Miguel, Fortes, A. Gil   +2 more
core   +1 more source

Design, synthesis and biological evaluations of a series of Pyrido[1,2-a]pyrimidinone derivatives as novel selective FGFR inhibitors

, 2021
Kai Ran, Jun Zeng, Guoquan Wan, Xiaojie He, Zhanzhan Feng, Xiang Wang, Wei Wei, Xiang Hu, Ningyu Wang, Zhihao Liu, Luoting Yu   +10 more
openalex   +1 more source

NITROIMIDAZOLES XI1 [I]: SYNTHESES OF TRISUBSTITUTED PYRAZOLES AND SUBSTITUTED (1 -METHYL-5-NITRO-2- IMIDAZOLYL) PYRIMIDINONES [PDF]

Journal of Sciences, Islamic Republic of Iran, 1995
The reaction of P-diketones 1 with phenyl hydrazine afforded 5-aryl-3-(1- methyl-5-nitro-2-imidazoly1)-1-phenylpyrazole (2) and 3-aryl-5-(1-methyl-5- nitro-2-imidazoly1) -1-phenylpyrazole (3).
doaj  

First-in-Human Phase 0 Trial of Oral 5-Iodo-2-Pyrimidinone-2′-Deoxyribose in Patients with Advanced Malignancies [PDF]

, 2013
Shivaani Kummar, Larry Anderson, Kimberly D. Hill, Eva Majerová, Deborah Allen, Yvonne Horneffer, S. Percy Ivy, Larry Rubinstein, Pamela Jo Harris, James H. Doroshow, Jerry M. Collins   +10 more
openalex   +1 more source

Synthesis and reactions of 2,3‐diamino‐4(3H)‐pyrimidinones and 3‐amino‐2‐hydrazino‐4(3H)‐pyrimidinones. I [PDF]

, 1984
Joseph J. Hlavka, Panayota Bitha, Yang‐I Lin, Timothy W. Strohmeyer   +3 more
openalex   +1 more source