کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9451731 | 1618881 | 2005 | 12 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Synthesis of branched para-nonylphenol isomers: Occurrence and quantification in two commercial mixtures
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موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم محیط زیست
شیمی زیست محیطی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Eight tertiary nonanols were synthesized via Grignard reaction and coupled by Friedel-Crafts alkylation with phenol to the corresponding nonylphenols. Six branched para-nonylphenols (NP) were obtained: 4-(3â²-methyl-3â²-octyl)phenol (33NP), 4-(2â²-methyl-2â²-octyl)phenol (22NP), 4-(2â²,5â²-dimethyl-2â²-heptyl)phenol (252NP), 4-(2â²,5â²,5â²-trimethyl-2â²-hexyl)phenol (2552NP), 4-(2â²,4â²-dimethyl-2â²-heptyl)phenol (242NP) and 4-(4â²-ethyl-2â²-methyl-2â²-hexyl)phenol (4E22NP). Their structures were confirmed by GC-MS and NMR spectroscopy. These six isomers as well as the earlier synthesized 4-(3â²,5â²-dimethyl-3â²-heptyl)phenol (353NP), 4-(3â²,6â²-dimethyl-3â²-heptyl)phenol (363NP) and 4-(2â²,6â²-dimethyl-2â²-heptyl)phenol (262NP) were compared with commercial NP mixtures purchased from Acros and Fluka by GC-MS (equipped with a 100Â m polysiloxane column). The analyses revealed that all obtained isomers are occurring in different quantities in both commercial NP mixtures.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemosphere - Volume 60, Issue 11, September 2005, Pages 1624-1635
Journal: Chemosphere - Volume 60, Issue 11, September 2005, Pages 1624-1635
نویسندگان
Alexander S. RuÃ, Ralph Vinken, Ingolf Schuphan, Burkhard Schmidt,