503863-93-2Relevant academic research and scientific papers
'Melen complexes': A new family of Schiff base metal chelates derived from di-Meldrum's acid derivatives
Montalban, Antonio Garrido,Alonso, Jorge,White, Andrew J.P.,Williams, David J.
scheme or table, p. 5543 - 5545 (2010/11/03)
A new family of N2O2-tetradentate ligands and complexes derived thereof, based on Meldrum's acid and diamines, has been developed. The structure of 7b has been unequivocally established by an X-ray crystallographic study. The general strategy has been successfully applied to the synthesis of a tridentate ligand that when reacted with Et2Zn resulted in the formation of a coordinatively linked dimer.
The synthesis of aromatic diazatricycles from phenylenediamine-bis(methylene Meldrum's acid) derivatives
Graf, Gabriele Ina,Hastreiter, Daniel,Da Silva, Luiz Everson,Rebelo, Ricardo Andrade,Montalban, Antonio Garrido,McKillop, Alexander
, p. 9095 - 9100 (2007/10/03)
The thermocyclisation of phenylenediamine-bis(methylene Meldrum's acid) derivatives has been investigated. Those of o-phenylenediamines give 1,10-phenanthroline derivatives, while those of m- and p-phenylenediamines lead to the preferential formation of angular diazatricycles. Thus, for example, the di-Meldrum's acid derivative of 2,5-dichloro-1,4-phenylenediamine gives, via ipso-substitution, the unexpected angular product 19.
