✍ Scribed by Xuan Zhao; Da-Qing Shi
No coin nor oath required. For personal study only.
A short and facile synthesis of 2,3,3a,4‐tetrahydropyrrolo[1,2‐a]quinazolin‐5(1__H__)‐ones and 2,3,3a,4‐tetrahydropyrrolo[1,2‐a]quinazoline‐1,5‐diones in good yields via the novel reductive cyclization of 2‐nitrobenzamides with haloketones or 4‐oxopentanoic acid promoted by low‐valent titanium reagent is described. J. Heterocyclic Chem., (2011).
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Quinazolin-4(3H)-ones, 1,2-dihydroquinazolin-4(3H)-ones, 3,4-dihydroquinazolines, imidazo[1,2-c]quinazolines and5,6-dihydroimidazo[1,2-c]quinazolines were synthesized by the novel reductive reaction of nitro group, N-H bond and ortho-ester, aldehydes or ketones promoted by the low-valent titanium re
## Abstract magnified image A short and facile synthesis of imidazo[1,2‐__c__]quinazolin‐5(6__H__)‐ones and benzimidazo[1,2‐__c__]quinazolin‐6(5__H__)‐ones was accomplished in good yields __via__ the novel reductive cyclization of 2‐(2‐nitrophenyl)imidazoles or 2‐(2‐nitrophenyl)benzoimidazoles wit