30086-49-8Relevant articles and documents
Synthesis of quaternary carbon-centered indolo[1,2-a]quinazolinones and indazolo[1,2-a]indazolonesviaC-H functionalization
Gogoi, Kongkona,Bora, Bidisha R.,Borah, Geetika,Sarma, Bipul,Gogoi, Sanjib
supporting information, p. 1388 - 1391 (2021/02/22)
An unprecedented Ru(ii)-catalyzed Csp2-H bond activation and annulation reaction of phenylindazolones with diaryl-substituted alkynes and dialkyl-substituted alkynes provided efficient routes for the construction of all-carbon quaternary-centered indolo[1,2-a]quinazolinones and quaternary carbon-centered indazolo[1,2-a]indazolones, respectively. The indolo[1,2-a]quinazolinones were fomedviaCsp2-H activation, alkyne insertion and a 1,2-phenyl shift. Indazolo[1,2-a]indazolones were formed through a cascade reactionviathe formation of exocyclic double bonds containing indolo[1,2-a]quinazolinones.
Regioselective Br?nsted Acid-Catalyzed Annulation of Cyclopropane Aldehydes with N′-Aryl Anthranil Hydrazides: Domino Construction of Tetrahydropyrrolo[1,2- a]quinazolin-5(1 H)ones
Banerjee, Prabal,Kaur, Navpreet,Singh, Priyanka
, p. 3393 - 3406 (2020/03/23)
A highly regioselective synthesis of tetrahydropyrrolo[1,2-a]quinazolin-5(1H)one derivatives was achieved by reacting cyclopropane aldehydes with N′-aryl anthranil hydrazides in the presence of p-toluene sulfonic acid (PTSA). The transformation involves domino imine formation and intramolecular cyclization to form 2-arylcyclopropyl-2,3-dihydroquinolin-4(1H)-one, followed by nucleophilic ring opening of the cyclopropyl ring to form desired tetrahydropyrrolo[1,2-a]quinazolin-5(1H)one in good to excellent yield with complete regioselectivity. This protocol tolerates a great variety of functional groups and thus provides a simple and step-efficient method for pyrroloquinazolinone synthesis.
Synthesis and anti-microbial / anti-malarial activity of a new class of chromone-dihydroquinazolinone hybrid heterocycles
Bathini, Pavan Kumar,Yerrabelly, Hemasri,Yerrabelly, Jayaprakash Rao
, p. 212 - 228 (2018/07/05)
A new series of chromone-2,3-dihydroquinazolin-4-one hybrid heterocycles are synthesized from chromone-2-carbaldehydes by coupling with 2-Aminoarylamides and hydrazides without oxidizing agents. The newly synthesized products exhibited moderate to good antimicrobial activity.
Copper-catalyzed efficient synthesis of 5-arylindazolo[3,2-b]quinazolin-7(5H)-ones from 2-nitrobenzaldehydes
Arasteh Fard, Zahra,Dilmaghani, Karim Akbari,Soheilizad, Mehdi,Larijani, Bagher,Mahdavi, Mohammad
, p. 2197 - 2201 (2018/03/28)
A novel and practical copper-catalyzed approach was developed for the preparation of 5-arylindazolo[3,2-b]quinazolin-7(5H)-ones. The 2-amino-N′-arylbenzohydrazideis easily prepared by a reaction of isatoic anhydride with arylhydrazine. Then, through a con
Anti-tumor pyrimidine compounds and preparation method thereof
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Paragraph 0049, (2017/08/28)
The invention belongs to the field of medicines and particularly relates to anti-tumor pyrimidine compounds and a preparation method thereof. The compounds belong to novel VEGFR (vascular endothelial growth factor receptor)-2 inhibitors and show good inhi
Unusual Acid- and Base-Catalyzed C-N Bond Formation Approach through Reaction of Chromonyl Meldrum's Acid and Nitrogen Binucleophiles
Balalaie, Saeed,Bijanzadeh, Hamid Reza,Mehrparvar, Saber,Rominger, Frank
supporting information, p. 782 - 788 (2016/03/09)
Reaction of chromonyl Meldrum's acid and N-substituted 2-aminobenzamides was studied in the presence of acidic and basic catalysts. The use of methanesulfonic acid as a catalyst in this reaction led to the synthesis of chromonyl quinazolinones through employing Meldrum's acid as a carbon leaving group. However, in the presence of basic catalyst, this reaction gave functionalized 2-pyridones.
Synthesis of Novel Phthalazino[1,2-b]quinazolinedione Derivatives: Efficient and Practical Reaction of 2-Amino-N′-Arylbenzohydrazides and 2-Formylbenzoic Acids
Arasteh-Fard, Zahra,Dilmaghani, Karim Akbari,Saeedi, Mina,Mahdavi, Mohammad,Shafiee, Abbas
, p. 539 - 542 (2016/07/21)
This work reported the synthesis of novel phthalazino[1,2-b]quinazolinedione derivatives through the reaction of 2-amino-N′-arylbenzohydrazides and 2-formylbenzoic acids in the presence of TsOH in EtOH under reflux conditions.
Palladium-Catalyzed Cascade Reaction of 2-Amino-N′-arylbenzohydrazides with Triethyl Orthobenzoates To Construct Indazolo[3,2-b]quinazolinones
Yang, Weiguang,Qiao, Rui,Chen, Jiuxi,Huang, Xiaobo,Liu, Miaochang,Gao, Wenxia,Ding, Jinchang,Wu, Huayue
, p. 482 - 489 (2015/08/18)
A palladium-catalyzed sequential cyclization/C-H activation cascade reaction of 2-amino-N′-arylbenzohydrazides with triethyl orthobenzoates has been developed, providing indazolo[3,2-b]quinazolinones in good to high yields. Two key intermediates of the re
Natural surfactant mediated phytosynthesis and solvatochromic fluorescence of 2-aminobenzamide derivatives
More, Pallavi,Patil, Amol,Salunkhe, Rajashri
, p. 63039 - 63047 (2015/02/19)
A green synthesis and intriguing solvatochromic behaviour of 2-aminobenzamide derivatives in varying solvents has been investigated. The biomaterial in the form of an aqueous extract of mesocarp of the fruit of the Balanites roxburghii plant as a natural surfactant reaction medium has been employed for phytosynthesis with quantitative yield at 60 °C. The reaction proceeds effortlessly in a short reaction time with easy product formation. The fluorescence property of some synthesized compounds was studied, along with the interesting solvatochromic behaviour of 2-amino-N-benzylbenzamide.
Design, synthesis, and antibacterial evaluation of some novel 3′-(phenylamino)-1′ h-spiro[indoline-3,2′-quinazoline]-2, 4′(3′ h)-dione derivatives
Mohammadi, Ali A.,Askari, Saber,Rohi, Hamed,Soorki, Ali Abolhasani
supporting information, p. 457 - 467 (2014/01/23)
A combinatorial synthesis and evaluation of antibacterial activity against clinically isolated resistant strains of Gram-positive and Gram-negative bacteria of 3′-(phenylamino)-1′H-spiro[indoline-3,2′- quinazoline]-2,4′(3′H)-dione derivatives is described