Abstract Ferrocenephosphonates make up an important class of organometallic derivatives with a wide range useful applications in organic synthesis and coordination chemistry. Here, approach to ferrocenephosphonates based on copper-promoted Hirao coupling is reported. Further functionalizations regioselective deprotolithiation both Negishi Suzuki–Miyaura cross-coupling reactions are also describ...

introduction: the aim of this study was to evaluate the apical and coronal sealing of endodontic fillings promoted by the associations of sealer 26/gutta-percha, endofill/gutta-percha and resilon/ epiphany. materials and methods: it was used 38 human canines, 10 teeth for each test group and 4 teeth for each control group. after teeth conventional endodontic treatment, they were immersed in sal...