34923-96-1Relevant articles and documents
Catalyst and solvent switched divergent C-H functionalization: Oxidative annulation of: N -aryl substituted quinazolin-4-amine with alkynes
Meesa, Siddi Ramulu,Naikawadi, Praveen Kumar,Gugulothu, Kishan,Shiva Kumar
, p. 3032 - 3037 (2020/05/08)
The development of site-selective C-H functionalizations/annulations is one of the most challenging practices in synthetic organic chemistry particularly for substrates bearing several similarly reactive C-H bonds. Herein, we describe catalyst and solvent controlled ortho/peri site-selective oxidative annulation of C-H bonds of N-aryl substituted quinazolin-4-amines with internal alkynes. The ortho C-H selective annulation was observed using Pd-catalyst in DMF to give indole-quinazoline derivatives, while, Ru-catalyst in PEG-400 favoured the peri C-H bond annulation exclusively to furnish pyrido-quinazoline derivatives.
One-pot multi component synthesis of 4-arylaminoquinazolines in the presence of sodium 30-tungstopentaphosphate
Bamoharram, Fatemeh F.,Heravi, Majid M.,Roshani, Mina,Monabati, Mahsa
experimental part, p. 511 - 514 (2011/12/16)
A new multi-component synthesis of 4-arylaminoquinazolines from the reaction of 2-aminobenzamide, orthoesters and substituted anilines in presence of catalytic amounts of sodium 30-tungstopentaphosphate, so-called Preyssler heteropolyacid, is reported. The effects of solvent, amount of catalyst and aniline and reaction time were studied. Optimum conditions for synthesis of 4-arylaminoquinazolines have been obtained.
Synthesis of 4-arylaminoquinazolines via 2-amino-N-arylbenzamidines
Szczepankiewicz, Wojciech,Suwinski, Jerzy
, p. 1785 - 1786 (2007/10/03)
A new synthesis of twelve 4-arylaminoquinazolines from 2-amino-N- arylbenzamidines and formic acid is described. The entering amidines were obtained in the reaction of anthranilonitrile with 50% molar excess of aromatic amines anhydrous aluminium chloride