Methane positive-ion chemical ionization mass spectra of phenols

✍ Scribed by Yoshio Iida; Shigeki Daishima; Akihiro Shibata

• Publisher: John Wiley and Sons
• Year: 1993
• Tongue: English
• Weight: 338 KB
• Volume: 28
• Category: Article
• ISSN: 1076-5174
• DOI: 10.1002/oms.1210280428

✦ Synopsis

Positive-ion chemical ionization mass spectra for 48 phenols were measured using methane as the reagent gas in order to clarify their characteristics. The ion species obtained were almost identical with those generated in alkylbenzenes except for dehydrated ions produced from MH+ and adduct ions, in particular compounds such as pyrocatechol. Specific ions such as C6H70+ (m/z 95) and C8H,,O+ (m/z 123) in phenol derivatives(C,H, -OH * R; R = CnH2n+l, n 2 3) and [C7H90] + (m/z 109) and C ~H ~J O + (m/z 137) in cresol derivatives (C,H, -OH * CH, * R) were formed, respectively, by alkene elimination reaction from MH+ and [ M + C,H,I +. The characteristic [M + 131 + and (M + 151' ions observed in several phenols were identified as [