Regioselective Condensation of Alkylidenephosphoranes with Bifunctionalized Compounds: New Approach to the Synthesis of Fused<i>O</i>- and<i>N</i>-Heterocycles
作者:Wafaa M. Abdou、Neven A. F. Ganoub、Amin F. M. Fahmy、Abeer A. M. Shaddy
DOI:10.1080/104265090921092
日期:2005.10
A series of fused pyran- (similar to 40% yield) and furan- (similar to 20% yield) derivatives were regioselectively prepared from the reactions of 5,6-difur-2'y1-3-oxo-2,3-dihydropyridazin-4-carbonitrile with ester- and keto phosphorus ylides, whereas new ylides were obtained, in addition to fused furans, in almost equal yields (33%) from the reaction of the same substrate with cyanomethylene(triphenyl)phosphorane. However application of such Wittig reagents on 2[(benzylidene)amino]-benzonitrile afforded, in all cases, 4-hydroxyquinalines in a similar to 42% yield as major products. Moreover; 2-[(triphenylphosphoranylidene)amino] benzonitrile, with the corresponding alkene, was also isolated a side products.
Sinsky, M. S.; Bass, R. G., Journal of Heterocyclic Chemistry, 1984, vol. 21, p. 759 - 768
作者:Sinsky, M. S.、Bass, R. G.
DOI:——
日期:——
A New Synthesis of 2-Aryl-3-acetyl-4-hydroxyquinolines Using Polyphosphoric Acid
作者:B. STASKUN
DOI:10.1021/jo01066a040
日期:1961.8
SINSKY, M. S.;BASS, R. G., J. HETEROCYCL. CHEM., 1984, 21, N 3, 759-768
作者:SINSKY, M. S.、BASS, R. G.
DOI:——
日期:——
Structures of the Products Obtained by the Condensation of Phenylbenzimino Chloride and Ethyl Sodioacetoacetate and Subsequent Cyclization<sup>1</sup>