3 documents found, page 1 of 1
Novel 3-(aminomethyl)naphthoquinone mannich base-platinum(IV) complexes: synthe...
Silva,Gustavo B. da; Neves,Amanda P.; Vargas,Maria D.; Alves,Wagner A.; Marinho-Filho,José D. B.; Pessoa,Cláudia; Moraes,Manoel O.Three novel platinum(IV) complexes cis,cis,trans-[Pt(HL1-3)Cl2(OH)2] 1b-3b (HL = 2-hydroxy-3-[(R¹-amino)(pyridin-2-yl)methyl]-1,4-naphthoquinone, R¹ = n-butyl, HL1; n-heptyl, HL2 and n-decyl, HL3) have been obtained from the oxidation of the respective precursors cis-[Pt(HL1-3)Cl2] 1a-3a. Cyclic voltammetry studies of 1b-3b in MeCN showed the quasi-reversible naphthoquinonate (NQO-, i.e. , L-) redox process and...
Novel 2-(R-phenyl)amino-3-(2-methylpropenyl)-[1,4]-naphthoquinones: synthesis, ...
Casellato,Annelise; Neves,Amanda P.; Carneiro,J. Walkimar de M.; Vargas,Maria D.; Visentin,Lorenzo do C.; Magalhães,Alviclér; Câmara,Celso A.Novel 2-(R-phenyl)amino-3-(2-methyl-propenyl)-[1,4]-naphthoquinones (R = H, 4-OMe, 4-Ferrocenyl, 4-Me, 3-Me, 4-I, 3-I, 4-CN, 3-CN, 4-NO2 and 3-NO2) derived from nor-lapachol [2-hydroxy-3-(2-methylpropenyl)-1,4-naphthoquinone] were obtained in good yields. Their structures were proposed on the basis of a single crystal X-ray diffraction study (R = OMe, 2b), ¹H and 13C NMR studies and calculations using the B3LYP...
Novel aminonaphthoquinone mannich bases derived from lawsone and their copper(I...
Neves,Amanda P.; Barbosa,Cláudia C.; Greco,Sandro J.; Vargas,Maria D.; Visentin,Lorenzo C.; Pinheiro,Carlos B.; Mangrich,Antônio S.; Barbosa,Jussara P.A series of novel Mannich bases (HL1-HL13) derived from 2-hydroxy-1,4-naphthoquinone (lawsone), substituted benzaldehydes [C6H2R¹R²R³C(O)H] and various primary amines (NH2R4, R4 = n-butyl, benzyl, allyl, 2-furfuryl), and their Cu2+ complexes, [Cu(L1)2]-[Cu(L13)2], have been synthesized and fully characterized by analytical and spectroscopic methods. The structures of complexes 1(R¹ = R² = R³ = H; R4 = Bu), 2(R¹...