Reversible and irreversible processes in alkyne - AlBr3 chemistry

✍ Scribed by H. Hogeveen; D.M. Kok

• Publisher: Elsevier Science
• Year: 1980
• Tongue: French
• Weight: 252 KB
• Volume: 21
• Category: Article
• ISSN: 0040-4039
• DOI: 10.1016/s0040-4039(01)85586-6

✦ Synopsis

NMR lme-broadenmg has shown the existence of a rapid exchange between 2-butyne and 2-butyne-AlBr3 vr complex. The AlBrg-induced heterocyclodlmerlzatlon of 2-butyne with propyne is preferred to the correspondmg homo-cyclodlmerlsatlons. Little is known about the interaction of alkynes with aluminum trihalides.' Many years ago it was reported that at low temperature aluminum trichloride and acetylene form a complex of unknown structure with composition (A12C16) (C2H2)12.L More recently, it has been shown by IR measurements at -1OO'C that dl-alkyl substituted alkynes interact with aluminum