Investigations on the reactions of a carbonylcarbene with substituted 1,3-dioxepins

Talinli, N; KARLIGA, B; Anac, Olcay

doi:10.1002/(sici)1522-2675(20000510)83:5<966::aid-hlca966>3.0.co;2-y

Investigations on the reactions of a carbonylcarbene with substituted 1,3-dioxepins

Atıf İçin Kopyala

Talinli N., KARLIGA B., Anac O.

HELVETICA CHIMICA ACTA, cilt.83, sa.5, ss.966-971, 2000 (SCI-Expanded)

Yayın Türü: Makale / Tam Makale
Cilt numarası: 83 Sayı: 5
Basım Tarihi: 2000
Doi Numarası: 10.1002/(sici)1522-2675(20000510)83:5<966::aid-hlca966>3.0.co;2-y
Dergi Adı: HELVETICA CHIMICA ACTA
Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
Sayfa Sayıları: ss.966-971
İstanbul Teknik Üniversitesi Adresli: Evet

Özet

Several dioxepins were treated with dimethyl diazomalonate under bis(acetylacetonato)copper(II) catalysis. The 4,7-dihydro-2-methyl-1,3-dioxepin (1a) gave oxonium ylide originated products and a cyclopropane derivative (see 3a and 2a. resp.. in Scheme 3b). However, the 2,2-dimethyl derivative 1b of 1,3-dioxepin yielded only the cyclopropanation product 2b, (Scheme 3.b), whereas 4,5-dihydro-2-methyl-1,3-dioxepin (9) gave the furanofuran derivative 10 (Scheme 4).