Lithiation of η6-fluorobenzenetricarbonylchromium(0) and reaction with dialkyl disulfides: synthesis of η6-1,2-bis- and 1,2,3-tris-alkylsulfanylbenzenetricarbonylchromium(0) complexes†,10.1039/C2RA20592K

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Lactoyl-CoA 全氟丁基戊烷白叶藤碱全氟己基辛烷新白叶藤碱壳寡糖特色专题-生物多肽

Lithiation of η6-fluorobenzenetricarbonylchromium(0) and reaction with dialkyl disulfides: synthesis of η6-1,2-bis- and 1,2,3-tris-alkylsulfanylbenzenetricarbonylchromium(0) complexes†

Helen Woolford,Mark R. J. Elsegood,George W. Weaver

RSC Advances Pub Date : 04/25/2012 00:00:00 , DOI:10.1039/C2RA20592K

Abstract

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 S_NAr 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.