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An efficient construction of quinazolin-4(3H)-ones under microwave
A recent paper has reported a Yb(OTf)3-catalyzed one- pot synthesis of quinazolin-4(3H)-ones from anthranilic acid, anilines and orthoesters (or formic.
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A Microwave-Assisted and Heteropolyacids-Catalysed - MDPI
Apr 3, 2008 ... catalysts such as Yb(OTf)3, Bi(TFA)3-FeCl4, silica gel/FeCl3, ... One–pot synthesis of 3-phenyl-4(3H)-quinazolinone from anthranilic acid, ... 60. 165. HC( OCH3)3. 54. 43. 132. 65. 156. PMo12. HC(OC2H5)3 ..... disubstituted-quinazolin- 4-ones enhanced by microwave-assisted decomposition of formamide.
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H3Mo12O40P-Catalyzed One-Pot Synthesis of Amidoalkyl Naphthols
Abstract: Solid H3Mo12O40P is used for an efficient one-pot synthesis of amidoalkyl .... Qian, C.; Sun, J. Yb(OTf)3-catalyzed one-pot synthesis of quinazolin-. 4(3H)-ones from anthranilic acid, amines, and ortho esters (or formic acid) in solvent-free ... Angew. Chem. Int. Ed. 2004, 43, 1566; (d) Zhao, G.; Jiang, T.; Gao,.
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Solvent- and Catalyst-Free Synthesis of New Unsymmetrical
Abstract: A one-pot, three-component, Mannich condensation of electron-rich aromatic compounds ..... Qian, C.; Sun, J. Yb(OTf)3-catalyzed one-pot synthesis of quinazolin-4. (3H)-ones from anthranilic acid, amines, and ortho esters (or formic acid) ... addition of diethylzinc to aromatic aldehydes. Tetrahedron Lett. 2002, 43,.
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Microwave assisted one-pot Total synthesis of some natural
So, by applying Microwave assisted one-pot synthesis above problems can be overcome. It is try to ... The review contains 2,3-disubstituted quinazolin-4-ones,.
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DABCO AS A NOVEL AND EFFICIENT CATALYST FOR THE SYNTHESIS OF ... were synthesized in high to excellent yields through the one-pot condensation of anthranilic acid, trimethyl orthoformate and primary amines in ... agent [26] and can catalyze the self and cross-condensation of α-acethylenic .... 1995, 43, 2021.
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STUDIES ON SYNTHESIS OF NATURALLY OCCURRING
Chapter 3: Total Synthesis of Quinazolinone Natural Products Luotonins A, B, E and F .... hydroxypyrrolo[2,1-b]quinazolin-9(1H)-one, 1b] have been isolated as ... 4a, chemoselective LAH-reduction of ester 5a, in situ LiOH-catalyzed ...... from anthranilic acid, ortho esters (or formic acid) and amines using Yb(OTf)3 in one- pot.
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View PDF Version - RSC Publishing - Royal Society of Chemistry
Aug 17, 2015 ... Indol-3-yl)quinazolin-4(3H)-one (4) has been isolated from an actinomycete ... Approximately 43 new 2,3-disubstituted quinazolinone alka- loids have been ... posed for them which began with two molecules of anthranilic acid and ..... Scheme 10 Yb(OTf)3-catalysed one pot synthesis of luotonin A. Review.
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Microwave Multicomponent Synthesis - MDPI.com
Dec 1, 2009 ... Keywords: one-pot reactions; synthetic methods; microwave technology; ... This is a versatile one-pot synthesis of 3,4-dihydropyrimidin-2(1H)-ones ... 10 mol% Yb( OTf)3 ... Bronsted acid catalyzed Biginelli DHPM synthesis. O ...... Reaction mixtures requiring only anthranilic acid/derivatives, .... Scheme 43.
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original version - MDPI
Jun 14, 2011 ... quinoline alkaloids, luotonins C and D are canthin-6-one alkaloids, and .... from vasicinone (4a) and anthranilic acid as shown in Scheme 1 [3]. .... Microwave assisted synthesis of the quinazoline ring from a lactam ... Such reaction conditions have been further simplified in a one-pot .... (CHO)2, Yb(OTf)3.
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Recent Progress in Three-Component Reactions. An Update
as a catalyst for the one-pot preparation of these compounds via the ... ones has been documented.25,26 A cadmium chloride catalyzed Biginelli reaction ... Rajitha et al.43,44 have reported a bismuth subnitrate and bismuth oxide perchlorate-.
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Download (5Mb) - Repository of the Academy's Library
Nov 23, 2012 ... 1. Introduction. The Mannich reaction is one of the most frequently applied .... microwave-assisted one-pot synthesis of 12 or 13 (Scheme 5) from. 2-naphthol ..... Yb(OTf)3, Na2SO4 .... The series of anilines was extended with anthranilic acid and ... N-sulphonyl imines were recently achieved by catalysis with.
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Part IV - Shodhganga
... Approach for the Synthesis of Quinazolin-4(3H)-one Derivatives ... synthesis of quinazolin-4(3H)-ones, one pot reaction of anthranilic acid, anilines and triethyl.
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Total synthesis of asperlicin C, circumdatin F, demethylbenzomalvin
benzodiazepinedione with anthranilic acid.9 From the synthesis point of view ... ( 1) using a one- pot domino procedure that owes its success to microwave heating ... Al(OTf)3, La(OTf)3, Mg(OTf)2, Sm(OTf)3, Sn(OTf)2, Yb(OTf)3 and Zn( OTf)2 ... one reaction step. ..... 2H-[1,4]Diazepino[2,1-b]quinazoline-3,7-(1H,4H, 5H)-dione.
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