On the cine substitution of 1,1-bis(tri-n-butylstannyl)ethenes in an intramolecular Stille reaction

✍ Scribed by Peter Quayle; Jingyang Wang; Jie Xu; Christopher J. Urch

• Publisher: Elsevier Science
• Year: 1998
• Tongue: French
• Weight: 220 KB
• Volume: 39
• Category: Article
• ISSN: 0040-4039
• DOI: 10.1016/s0040-4039(97)10584-6

✦ Synopsis

An attempted inta-amolecular Stille coupling of a bis-stannyletheue proceeds not by ipsosubstitution (7-endo--cyclisation) but via a c/he substitution pathway (6-exo-cyclisation). Deuterium labelling studies and blank reactions are in consonance with a palladium ca_rbene mechanism originally put forward by Bnsacca to explain the c/he substitution reactions of styrylstannanes.