New pyrroles from quinazolinium N1-ylides and acetylenic dipolarophiles
The new pyrroles 8a,b were obtained by one-pot reaction from N1-quinazolinum bromides and non-symmetrical acetylenic dipolarophiles. Structural characterizations were based on IR and NMR spectroscopy as well as on single crystal X-ray diffraction.
A novel approach for the synthesis of N -arylpyrroles
Treatment of quinazolin-4(3H)-one bromides with acetylenic dipolarophiles in 1,2-epoxybutane medium gave, in good yields, N-arylpyrroles instead of the corresponding pyrrolo[1,2-a]quinazolines. The structures of the pyrroles were deduced by NMR spectrosco
Dumitrascu, Florea,Georgescu, Emilian,Caira, Mino R.,Georgescu, Florentina,Popa, Marcel,Draghici, Bogdan,Dumitrescu, Dan G.
experimental part
p. 3336 - 3340
(2010/03/03)
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