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2005
Organo-tin compounds
S 4800
Distannylation of Strained Carbon—Carbon Triple Bonds Catalyzed by a PallaComplex. — Distannylation of substituted benzynes, generated in situ from (I)
03- 171 dium
and a fluoride ion in the presence of a palladium/tert-octyl isocyanide complex, is reported. Reaction of aryne (IV) containing two triple bonds results in the formation of
four carbon-tin bonds in one step. The new method is also suitable for cyclohexynes.
No reaction is observed for 4-(trimethylsilyl)phenyl triflate using similar catalyst systems. — (YOSHIDA*, H.; TANINO, K.; OHSHITA, J.; KUNAI*, A.; Angew.
Chem., Int. Ed. 43 (2004) 38, 5052-5055; Dep. Appl. Chem., Fac. Eng., Hiroshima
Univ., Higashi-Hiroshima 739, Japan; Eng.) — S. Adam
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