We have investigated reactions between 1,3,5-tris(1-piperid-yl) benzene and 1,3,5-tris(4-morpholinyl)benzene and 4-sub-stituted arenediazonium tetrafluoroborate salts, mainly by NMR spectroscopic measurements. The main products are σ complexes (Wheland-like intermediates) which are formed in almost quantitative yields and are moderately stable com-pounds. From these covalent complexes, products of the azo-coupling reaction may be obtained as salts or as free bases.
C. Boga, E. Del Vecchio, L. Forlani (2004). First Evidences for the Wheland Intermediates in Azo-coupling Reaction. Reactions between 1,3,5-Tris(N,N-dialkylamino)benzene and Arenediazonium Salts. EUROPEAN JOURNAL OF ORGANIC CHEMISTRY, -, 1567-1671 [10.1002/ejoc.200300701].
First Evidences for the Wheland Intermediates in Azo-coupling Reaction. Reactions between 1,3,5-Tris(N,N-dialkylamino)benzene and Arenediazonium Salts
BOGA, CARLA;DEL VECCHIO, ERMINIA;FORLANI, LUCIANO
2004
Abstract
We have investigated reactions between 1,3,5-tris(1-piperid-yl) benzene and 1,3,5-tris(4-morpholinyl)benzene and 4-sub-stituted arenediazonium tetrafluoroborate salts, mainly by NMR spectroscopic measurements. The main products are σ complexes (Wheland-like intermediates) which are formed in almost quantitative yields and are moderately stable com-pounds. From these covalent complexes, products of the azo-coupling reaction may be obtained as salts or as free bases.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
