We have developed a general and highly efficient copper-catalyzed method for synthesis of quinazoline and quinazolinone derivatives, the target products were obtained in good to excellent yields via cascade reactions of amidine hydrochlorides with substituted 2-halobenzaldehydes, 2-halophenylketones, or methyl 2-halobenzoates, and the method is of simple, economical and practical advantages.
Electron deficient heteroaromatic ammonioamidates. Part 24. N-(Quinazolin-3-io)amidates. Part 11. The photochemistry of N-(6,7-methylenedioxyquinazolin-3-io)amidates in acetone
N-(Quinazolin-3-io)amidates (1) may exist, depending on the nature of the groups R, R1, and R2, and in the absence of nucleophiles, as equilibrium mixtures of the monomeric (1) and dimeric (3) forms. For the first time evidence has been found for the generation of photoproducts of the dimeric forms (3)via irradiation of the quinazolinioamidates (1a–c) in acetone in which substantial amounts of the
N-(6,7-methylenedioxy-3-quinazolinio)amidates—I synthesis spectra and some dark reactions
作者:J. Fetter、K. Lempert、J. Møller
DOI:10.1016/0040-4020(75)80270-5
日期:1975.1
forms were obtained in the crystalline state. In protic solvents adducts of types 7 and 12 are formed, some of which are stable in the crystalline state. IR, NMR and mass spectra of compounds 5–7 and 12, and several dark reactions, are discussed.