Synthesis of novel crown ethers .1. Coumestan and coumestan analog derivatives of crown ethers

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Atıf İçin Kopyala

Bulut M., Yilmaz B., Yapici M., Kahraman M. V.

JOURNAL OF INCLUSION PHENOMENA AND MOLECULAR RECOGNITION IN CHEMISTRY, cilt.26, ss.39-46, 1996 (SCI-Expanded)

• Yayın Türü: Makale / Tam Makale
• Cilt numarası: 26
• Basım Tarihi: 1996
• Doi Numarası: 10.1007/bf01029926
• Dergi Adı: JOURNAL OF INCLUSION PHENOMENA AND MOLECULAR RECOGNITION IN CHEMISTRY
• Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
• Sayfa Sayıları: ss.39-46
• Marmara Üniversitesi Adresli: Evet

Özet

The presented ethylenedioxy compounds 5a, 5d, 6a and 6c are examples of novel cyclic ethers, while macrocyclic polyethers represent new crown ether analogues. New coumestan-crowns 5a-f, derivatives of 6, 7-dihydroxy-3, 4-dihydro-2H-dibenzofuran and 6, 7-dihydroxy-3, 3-dimethyl-3, 4-dihydro-2H-dibenzofuran-1-one 6a-e were synthesized from the corresponding o-dihydroxy compounds 3a-b, 4a-b and ditosylates or dichlorides of di- or triethylene glycol in the presence of K2CO3, in DMF/H2O (15/1) solutions at 65-75 degrees C for 35 hours. The structure of the macrocyclic ethers obtained were confirmed by H-1-NMR, C-13-NMR, IR spectra and elemental analyses.