The formation of 3,3,4,4-tetrafluoro-1,2-dichlorocyclobutene and its reactions with metal carbonyl anions
1972; Elsevier BV; Volume: 1; Issue: 3 Linguagem: Inglês
10.1016/s0022-1139(00)83226-1
ISSN1873-3328
Autores Tópico(s)Molecular Spectroscopy and Structure
ResumoThe reported preparation of 1,2,3,4-tetrafluoro-3,4-dichlorocyclobutene from commercial 1,2,-dichloro-1,2-difluoroethylene when carried out in stainless steel reaction vessels also yields some 3,3,4,4-tetrafluoro-1,2-dichlorocyclobutene. Reactions of the 3,3,4,4-tetrafluoro-1,2,-dichlorocyclobutene with the sodium salts of the metal carbonyl anions [C5H5Fe(CO)2]- and Mn(CO)5- results in replacement of a vinylic chlorine atom with a metal atom to give yellow-orange C4F4ClFe(CO)2-C5H5 and white C4F4ClMn(CO)5, respectively. Reaction of C4F4ClFe(CO)2C5H5 with triphenylphosphine, preferably in the presence of ultraviolet irradiation, gives the triphenylphosphine derivative C4F4(ClFe(CO)[P(C6H5)3](C5H5). The mass spectra of the new metal fluorocarbon complexes are discussed.
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