- Selective access to new semicarbazones and thiosemicarbazones derived from benzil. Study of their conversion reactions
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New Schiff bases from benzil with semicarbazide and thiosemicarbazide are reported. An open chain molecule, benzilbissemicarbazone 1 was prepared in presence of lithium hydroxide. A cycle 6-methoxy-1,6-diphenyl-4-thio- 3,4,5,6-tetrahydro-2,3,5-triazine 7 was obtained from thiosemicarbazide. A cyclic molecule, 1,6-diphenyl-4-oxo-3,4,5,6-tetrahydro-2,3,5-triazine 4 was produced from the recrystallization of 3 in chloroform. A new macrocyclic complex 8 was isolated from the open chain 6 in the presence of iron (III) chloride hexahydrated. Compounds 1, 2 convert into the cyclic 3 heated under reflux. In addition, we have got an iron complex 5 of 1 using the compound 2 as precursor. The crystal structure of 7 was obtained by single crystal X- Ray diffraction.
- Arquero, Agueda,Canadas, Marta,Martinez-Ripoll, Martin,Mendiola, Ma. Antonia,Rodriguez, Ana
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p. 11271 - 11284
(2007/10/03)
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- Copper(II) Complexes of Hydrazone Derivatives
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Three benzil based, macrocyclic oxygen-, nitrogen-, and sulfur-containing ligands, (3,4,10,11-tetraphenyl-1,2,5,6,8,9,12,13-octaazacyclotetradeca-7,14-dithione-2,4,9,11-tetraene) ethanol (L1), 10,11-diethoxy-3,4,10,11-tetraphenyl-1,2,5,6,8,9,12
- Souza, P.,Mendiola, M. A.,Arquero, A.,Fernandez, V.,Gutierrez-Puebla, E.,Ruiz-Valero, C.
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p. 263 - 271
(2007/10/02)
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