Functionalization of anthracene: A selective route to brominated 1,4-anthraquinones     
Yazarlar (4)
Doç. Dr. Kıymet BERKİL AKAR Tokat Gaziosmanpaşa Üniversitesi, Türkiye
Osman Çakmak
İstanbul Rumeli Üniversitesi, Türkiye
Orhan Büyükgüngör
Ondokuz Mayıs Üniversitesi, Türkiye
Ertan Şahin
Atatürk Üniversitesi, Türkiye
Makale Türü Özgün Makale
Makale Alt Türü SSCI, AHCI, SCI, SCI-Exp dergilerinde yayınlanan tam makale
Dergi Adı Beilstein Journal of Organic Chemistry
Dergi ISSN 1860-5397 Wos Dergi Scopus Dergi
Dergi Tarandığı Indeksler SCI-Expanded
Dergi Grubu Q4
Makale Dili İngilizce
Basım Tarihi 01-2011
Cilt No 7
Sayı 7
Sayfalar 1036 / 1045
DOI Numarası 10.3762/bjoc.7.118
Makale Linki http://dx.doi.org/10.3762/bjoc.7.118
Özet
Efficient and stereoselective syntheses are described for the preparation of 2,3,9,10-tetrabromo-1,4-dimethoxy-1,2,3,4-tetrahydroanthracenes 7, 8 and the corresponding 1,4-diol 17 by silver ion-assisted solvolysis of hexabromotetrahydroanthracene 6. Base-promoted aromatization of 7 and 8 afforded synthetically valuable tribromo-1-methoxyanthracenes 10 and 11. The reaction of 17 with sodium methoxide generated tribromodihydroanthracene-1,4-diol 27, whose oxidation with PCC gave 2,9,10-tribromoanthracene-1,4-dione (28). Therefore a selective and efficient method was developed for the preparation of compound 28 starting from 9,10-dibromoanthracene (1), in a simple four-step process. Compounds 10 and 11, and diol 27 constitute key precursors for the preparation of functionalized substituted anthracene derivatives that are difficult to prepare by other routes. The studies also reveal the broad range of reactivity and selectivity of the stereoisomeric anthracene derivatives.
Anahtar Kelimeler
anthracene derivatives | anthracene-1,4-dione | aromatization | bromination | bromoanthracene | methoxyanthracene | silver-induced substitution