Studies on the chemistry of 1, 4??oxazines. 18. Synthesis of tricyclic 1, 4??benzoxazines via nucleophilic substitution of activated precursors

H Bartsch, T Erker, G Neubauer

Index: Bartsch, Herbert; Erker, Thomas; Neubauer, Gustav Journal of Heterocyclic Chemistry, 1989 , vol. 26, p. 205 - 207

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Citation Number: 6

Abstract

206 H. Bartsch, Th. Erker and G. Neubauer Vol. 26 EXPERIMENTAL All melting points are measured with a Kotier hot-stage apparatus and are uncorrected. Mass spectra were recorded on a Varian MAT-311 in- strument (70 eV) and nmr spectra on a Bruker AC 80 spectrometer (80 MHz) using TMS as internal standard in deuteriochloroform unless otherwise stated. Ir spectra (potassium bromide) were obtained on a Jasko IRA-1 instrument. 2,4-Dihydro-l#-imidazo[2,l-cIl,4] ...