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Nuclear magnetic resonance spectroscopy and the structures of the regioisomeric products of the cycloaddition of C-ethoxycarbonyl-N-arylnitrilimines to α,β-unsaturated ketones

✍ Scribed by Ahmad S. Shawali; Saleh T. Ezmirly; Ahmad M. Bukhari


Publisher
Elsevier Science
Year
1992
Tongue
English
Weight
357 KB
Volume
48
Category
Article
ISSN
1386-1425

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## Lew~'s acid catal.vzed rearrangement of cr,B-epoxy o.yimes proceeds b_v oxl'rane cleavage u to the oxime moiety with an attendant pinacol t_vpe alkyd roigration to the resonance stabilized carbenium ion at C, affording a I,_%d2'keto-monoxl'me. Recent mechanistic studies have provided cogent arg