Lithiation of η6-fluorobenzenetricarbonylchromium(0) and reaction with dialkyl disulfides: synthesis of η6-1,2-bis- and 1,2,3-tris-alkylsulfanylbenzenetricarbonylchromium(0) complexes
journal contributionposted on 07.03.2013, 10:22 by Helen Woolford, Mark ElsegoodMark Elsegood, George WeaverGeorge Weaver
Directed lithiation of η6-fluorobenzenetricarbonylchromium(0) and reaction with dialkyl disulfides affords η6-1,2-bis-alkylsulfanylbenzenetricarbonylchromium(0) complexes by electrophilic addition of an alkylthio group at C-2 of the benzene ring, and subsequent SNAr reaction with displacement of fluoride by the alkanethiolate generated in the first step. 1,2,3-tris-Alkylsulfanylbenzene complexes are formed as by-products. The structures of four of the new complexes have been confirmed by X-ray crystallography, one using synchrotron radiation.