@article{MTMT:1013250, title = {Transformation reactions of the Betti base analog aminonaphthols}, url = {https://m2.mtmt.hu/api/publication/1013250}, author = {Szatmári, István and Hetényi, Anasztázia and Lázár, László and Fülöp, Ferenc}, doi = {10.1002/jhet.5570410310}, journal-iso = {J HETEROCYCLIC CHEM}, journal = {JOURNAL OF HETEROCYCLIC CHEMISTRY}, volume = {41}, unique-id = {1013250}, issn = {0022-152X}, abstract = {By means of simple or domino ring-closure reactions of 1-(alpha-aminobenzyl)-2-naphthol (Betti base: 1), 1-aminomethyl-2-naplithol (2) and 2-(alpha-aminobenzyl)-1-naphthol (reverse Berri base: 3) with phosgene, ethyl benzimidate, 2-carboxybenzaldehyde, levulinic acid, salicylaldehyde/formalin or salicylaldehyde/acetaldehyde, naphth[1,2-e][1,3]oxazine and naphth[2,1-e][1,3]oxazine derivatives were prepared. All of the nitrogen-bridged polycyclic derivatives of 1 and 3 containing a number of centers of asymmetry were formed with nearly complete diastereoselectivity. Considerable differences were observed in the ring-closing abilities of the unsubstituted and phenyl-substituted aminonaphthols 1 and 2 and of the regioisomeric compounds 1 and 3.}, year = {2004}, eissn = {1943-5193}, pages = {367-373}, orcid-numbers = {Szatmári, István/0000-0002-8571-5229; Hetényi, Anasztázia/0000-0001-8080-6992; Lázár, László/0000-0002-2135-8496; Fülöp, Ferenc/0000-0003-1066-5287} } @article{MTMT:1013529, title = {Substituent effects in the ring-chain tautomerism of 1,3-diaryl-2,3-dihydro-1H-naphth[1,2-e] [1,3]oxazines}, url = {https://m2.mtmt.hu/api/publication/1013529}, author = {Szatmári, István and Martinek, Tamás and Lázár, László and Fülöp, Ferenc}, doi = {10.1016/S0040-4020(03)00331-4}, journal-iso = {TETRAHEDRON}, journal = {TETRAHEDRON}, volume = {59}, unique-id = {1013529}, issn = {0040-4020}, abstract = {Condensation of Betti base analogue amino naphthols with substituted benzaldehydes led to 1,3-diaryl-2,3-dihydro-1H-naphth[1,2-e][1,3]oxazines (3-9) which proved to be three-component (r(1)-o-r(2)) tautomeric mixtures in CDCl3 at 300 K. The electronic effects of the 3-aryl groups on the ratios of the ring-chain tautomeric forms at equilibrium could be described by the equation log K-X=rhosigma(+)+log K-X=H. The value of the intercept was found to be strongly influenced by the steric arrangement of the 1,3-diaryl substituents. (C) 2003 Elsevier Science Ltd. All rights reserved.}, year = {2003}, eissn = {1464-5416}, pages = {2877-2884}, orcid-numbers = {Szatmári, István/0000-0002-8571-5229; Martinek, Tamás/0000-0003-3168-8066; Lázár, László/0000-0002-2135-8496; Fülöp, Ferenc/0000-0003-1066-5287} }