作者:Ignacio H. Sánchez*、María Isabel Larraza、Fernande Basurto、Ricardo Yafñez、Salvador Avila、Ricardo Tovar、Pedro Joseph-Nathan
DOI:10.1016/s0040-4020(01)96630-x
日期:1985.1
(±)--methylperezone () was obtained by selective oxidative demethylation of (±)-leucoperezone trimethyl ether (). Compound () was prepared by condensation of 2,3,5-trimethoxytoluene () with 6-methyl-5-hepten-2-one, followed by reductive removal of the tertiary alcohol. The aromatic precursor was prepared in four steps from 2,3-dimethoxytoluene () and, alternatively, in three steps from 5-bromoveratraldehyde
Molecular Structure of Substituted Phenylamine α-OMe- and α-OH-<i>p</i>-Benzoquinone Derivatives. Synthesis and Correlation of Spectroscopic, Electrochemical, and Theoretical Parameters
作者:M. Aguilar-Martínez、J. A. Bautista-Martínez、N. Macías-Ruvalcaba、I. González、E. Tovar、T. Marín del Alizal、O. Collera、G. Cuevas
DOI:10.1021/jo010302z
日期:2001.12.1
chemical reaction, we considered both methylation of the -OH group (APZms) and addition of a strong base, tetramethylammonium phenolate (Me(4)N(+)C(6)H(5)O(-)), to completely deprotonate the APZs. Methylation led to recovery of reversible, bi-electronic behavior (Q/Q(*)(-) and Q(*)(-)/Q(2)(-)), indicating the nonacidic properties of the NH group. The addition of a strong base resulted in reduction of perezonate