Anisyl carbonium ions

✍ Scribed by B.G. Ramsey; James Cook

• Book ID: 104239069
• Publisher: Elsevier Science
• Year: 1969
• Tongue: French
• Weight: 180 KB
• Volume: 10
• Category: Article
• ISSN: 0040-4039
• DOI: 10.1016/s0040-4039(01)87741-8

✦ Synopsis

The nature of transition states and intermediates in the solvolysis of 2,4-, and 5-aryl substituted alkyl halides, etc. continues to be a source of controversy (1). Rate and product studies (l-3) have been interpreted as proceeding through intermediates or transition states such as I and II. Recently, for E-CH~OC~H,C(CH~)~C(CH~)~X (X = OH, Cl, DNB) and related compounds, Brown and Kim (1) have argued for rapidly equilibrating n bridged intermediates eq. (1) in reactions considered to proceed by a carbonium ion mechanism. R I(a) R=OCH, OCHa R==R2=R3=R4=H R' R3 II (b) R=H R3 Rb R'=R2=R3=R'=CH3