AROMATIC SUBSTITUTION: PART IX. ON THE MECHANISM OF THE PSCHORR CYCLIZATION
Keyword(s):
The decomposition of the diazonium salt from 3-(o-aminobenzoyl)pyridine has been studied under various conditions. A competitive-type cyclization of an equimolar mixture of the diazonium salts of 2-aminobenzophenone and 2-amino-3′-nitrobenzophenone has also been carried out. The results are interpreted in terms of a radical process in the copper-catalyzed reactions. It is suggested that the uncatalyzed thermal decompositions in aqueous acid solution give rise to a diradical cation intermediate in equilibrium with the aryl cation.
1959 ◽
Vol 63
(9)
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pp. 1475-1484
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1975 ◽
Vol 7
(2)
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pp. 205-214
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1993 ◽
Vol 38
(2-3)
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pp. 175-183
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1974 ◽
pp. 824
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1993 ◽
Vol 345
(1-2)
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pp. 323-335
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1992 ◽
pp. 1653
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Keyword(s):
1987 ◽
Vol 138
(1)
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pp. 61-65
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