Proof of a radical mechanism in the photochemical rearrangement of α-allenic halides

✍ Scribed by Elie Michel; Jacques Raffi; Clément Troyanowsky

• Book ID: 104246720
• Publisher: Elsevier Science
• Year: 1973
• Tongue: French
• Weight: 149 KB
• Volume: 14
• Category: Article
• ISSN: 0040-4039
• DOI: 10.1016/s0040-4039(01)95725-9

✦ Synopsis

The liquid-phase rearrangement of 1.2 dienee (I) to 1.3 dienee (II) can be oatalysed by cu dust, cu+, zn 2+ , etc..('p2). It can also be achieved thermally at temperature8 rsnging from oO-130°C ( p = Br) to 350-40C°C ( P = Cl) (2,3,4) and photoohemioally(4'5). yR CH2&C\ (I) CR2P CH2=C+CH2 kp The &i-catalyzed rearrangement of (I) proceeds shown by the ESR spectrum of (I) (R = tit, P-Br, excess of 1018ml-' (2) , whereas none ere detected