Preparation and Beckmann Rearrangement of<i>O</i>-(Chlorooxalyl)oximes
作者:Johannes C. Jochims、Sabine Hehl、Siegfried Herzberger
DOI:10.1055/s-1990-27112
日期:——
Oximes 1 react with phosgene or oxalyl chloride to give O-(chloroformyl)- 2, or O-(chlorooxalyl) oximes 8, which undergo Beckmann rearrangement with antimony pentachloride to afford nitrilium hexachloroantimonates 3 in high yields. With di- or triphosgene (4 or 6) oximes 1 form mixtures of O-(chloroformyl)- 2 and O-(trichloromethoxyformyl)oximes 5. The O-(chlorooxalyl)oximes 8 further characterized as esters 10 and amides 11. With N,N-dimethylformamide the nitrilium salts 3 react to give N-acyl formamidinium salts 12.
SHUSTOV, G. V.;TAVAKALYAN, N. B.;SHUSTOVA, L. L.;PLESHKOVA, A. P.;KOSTYAN+, IZV. AN CCCP. CEP. XIM., 1982, N 2, 364-375
作者:SHUSTOV, G. V.、TAVAKALYAN, N. B.、SHUSTOVA, L. L.、PLESHKOVA, A. P.、KOSTYAN+
DOI:——
日期:——
From dioxime oxalates to dihydropyrroles and phenanthridines via iminyl radicals
作者:Fernando Portela-Cubillo、Eoin M. Scanlan、Jackie S. Scott、John C. Walton
DOI:10.1039/b808625g
日期:——
Dioxime oxalates are useful precursors for the clean generation of iminyl radicals by sensitised UV photolysis and can be adapted for serviceable preparations of 3,4-dihydro-2H-pyrroles and phenanthridines.