Disconnection of the organic moiety metal in chromium and tungsten complexes [(dithiin)M(CO)5].

ALEJANDRO M. GRANADOS; ALEJANDRO M. FRACAROLI; JERÓNIMO KREIKER; RITA H. DE ROSSI

JOURNAL OF PHYSICAL ORGANIC CHEMISTRY

John Wiley & Sons, Ltd.

Año: 2006 p. 823 - 823

0894-3230

font face="AdvP1491" color="#7f7f7f" size="1"> ABSTRACT: The reaction of 5-alkylthio-3H-1,2-dithiole-3-thione derivatives with Fischer alkoxy carbenes gives 1,3- dithiin dithioorthoesters derivatives complexed with M(CO)5 (M¼Cr or W).We report here that the dithiin derivative free of metal can be obtained b ligand exchange using acetonitrile, methanol, phenyl methyl sulfide or (Ph)3P. Methanol gives the best results from a preparative point of view. The reaction with acetonitrile was shown to be reversible and the kinetic of ligand exchange