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TRIPHENYLPHOSPHINE CATALYZED AROMATIC ELECTROPHILIC SUBSTITUTION OF 2-HYDROXYACETOPHENONE MEDIATED BY VINYLTRIPHENYLPHOSPHONIUM CATION

Journal of Sciences, Islamic Republic of Iran
مقاله 5، دوره 10، شماره 2، 1999    اصل مقاله (208.55 K)
چکیده
Protonation of the highly reactive 1:l intermediate produced in the reaction
between triphenylphosphine and dimethyl acetylenedicarboxylate by 2-
hydroxyacetophenone leads to vinyltriphenylphosphonium salt, which undergoes
aromatic electrophilic substitution reaction with the conjugate base to produce
compounds 4,5, and 6 in 1 : 1.2:0.5 ratios
آمار
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