Push–pull and pull–push effects in isaty
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Martha S. Morales-Ríos; Manuel García-Velgara; Humberto Cervantes-Cuevas; Celina
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Article
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2000
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John Wiley and Sons
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English
⚖ 122 KB
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A series of C-8 mono-and disubstituted isatylidenes were prepared in order to examine the influence of the substituent on the polarization of the ethylenic carbons C-3 C-8. Donor-acceptor C-8 substitution resulted in an inversion of the polarization of the ethylenic carbons, as evidenced by the 13 C