Reactions between nitrite oxides and benzylic carbocations are described. Different results were obtained when the carbocations were generated from the corresponding chlorides with different Lewis acids, with addition products such as benzoxazines, oximes, and amides being produced. Primary, secondary, and tertiary carbocations showed different reactivities. The product ratios strongly depended on the substituents on the aromatic ring of the benzylic carbocations. Evidence for the proposed mechanism is reported. ((C) Wiley-VCH Verlag GmbH, 69451 Weinheim, Germany, 2002).
Auricchio Sergio, Bini Antonella, Pastormerlo Eros, Ricca Aldo, Truscello+, Tetrahedron, 50 (1994) N 25, S 7589-7596
作者:Auricchio Sergio, Bini Antonella, Pastormerlo Eros, Ricca Aldo, Truscello+
DOI:——
日期:——
Nitrile Oxide-BF3 complex as electrophilic moiety towards aromatic systems: Stereospecific synthesis of oximes
作者:Sergio Auricchio、Antonella Bini、Eros Pastormerlo、Aldo Ricca、Ada M. Truscello
DOI:10.1016/s0040-4020(01)90486-7
日期:——
Aromatic Oximes are obtained stereospecifically by action of Nitrile Oxide-BF3 complexes on Aromatic Compounds.