We recently demonstrated that Cp, Ind and Flu anions cause epoxides ring opening reaction to form mono-functionalized O-bearing ligands. Now we describe the synthesis of polydentate derivatives, obtained by running the reaction in the presence of oxirane excess. In fact, under this condition the nucleophylic attack of cyclopentadienyl gives in one step mono [C5H4R; R = CH2CH(Me)OH or CH(CH2)3CHOH] (1) o bifunctionalized ligands [C5H3R2] (2), if thermally solicited.By analogy, the reactions with Indenyl anion affords 3 and the disubstituted derivative 4.The coordination abilities of the class of polydentate -ligands, alcohol or ether substituted, have been tested with transition metals to give half-sandwich (A or B)
P. Natanti, S. Bordoni, L. Busetto, S. Cerini (2005). SYNTESIS and COORDINAtion of multidentate O-functioanlized Cp ligands. SIENA : SCI.
SYNTESIS and COORDINAtion of multidentate O-functioanlized Cp ligands
NATANTI, PAOLO;BORDONI, SILVIA;BUSETTO, LUIGI;CERINI, STEFANO
2005
Abstract
We recently demonstrated that Cp, Ind and Flu anions cause epoxides ring opening reaction to form mono-functionalized O-bearing ligands. Now we describe the synthesis of polydentate derivatives, obtained by running the reaction in the presence of oxirane excess. In fact, under this condition the nucleophylic attack of cyclopentadienyl gives in one step mono [C5H4R; R = CH2CH(Me)OH or CH(CH2)3CHOH] (1) o bifunctionalized ligands [C5H3R2] (2), if thermally solicited.By analogy, the reactions with Indenyl anion affords 3 and the disubstituted derivative 4.The coordination abilities of the class of polydentate -ligands, alcohol or ether substituted, have been tested with transition metals to give half-sandwich (A or B)I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
