Tetrahedron p. 2857 - 2868 (1989)
Update date:2022-07-29
Topics:
Tiecco, M.
Tingoli, M.
Testaferri, L.
Bartoli, D.
Chianelli, D.
The homo coupling of some halogenopyridyl t-butyl sulphides with Ni(O) complex, formed in situ from nickel(II) chloride, triphenylphosphine and zinc dust in DMF, afforded bis(t-butylthio)bipyridyls in moderate to good yield.These compounds were dealkylated by electron transfer with sodium in HMPA; the resulting thiolate anions were directly treated with methyl iodide and the bis(methylthio)bipyridyls were obtained.The dealkylation with a solution of sodium in HMPA afforded the mono anions which, after treatment with methyl iodide, gave the t-butylthio(methylthio)bipyridyls.
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