Monatshefte fur Chemie p. 899 - 908 (1980)
Update date:2022-09-26
Topics:
Capuano, Lilly
Bronder, Marott
Hell, Wolfgang
Moersdorf, Peter
Hoge, Reinhold
The reaction of diethyl bromomalonate (1) or diethyl diazomalonate (6) with benzoyl isothiocyanate (2) proceeds via the carbene intermediates 4,7 or 12 to afford the 1,3-dithiole 5, the Δ2-oxazoline 8 or the 1,3-oxathioles 9 depending upon the catalyst employed.In contrast, the bis(ethoxycarbonyl)methylpyridinium bromides 14 upon treatment with benzoyl isocyanates 15 in pyridine give rise to vinylene dipyridinium dibromides 18.- Keywords: Heterocyclizations; 1H-NMR-Spectroscopy; Iso(thio)cyanates; Malonates
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Doi:10.1111/cbdd.13678
(2020)Doi:10.1039/J19670001783
()Doi:10.1021/om3005146
(2012)Doi:10.1007/BF00504115
(1980)Doi:10.1007/BF02164671
(1956)Doi:10.1039/c3ra45289a
(2013)
