Mp. Crozet et al., UNEXPECTED SYNTHESIS OF A THIAZOLIC DERIV ATIVE RELATED TO DIDUROQUINONE, Comptes rendus de l'Academie des sciences. Serie 2, Mecanique, physique, chimie, sciences de l'univers, sciences de la terre, 318(2), 1994, pp. 185-190
thylthiazol-2-yl)-3,5,6-trimethyl-1,4-benzoquinone does not react eith
er by C- or by O-alkylation with 2-nitropropane anion, but affords in
95% yield a single product related to diduroquinone, which results fro
m the enolization of the quinone and cycloaddition between the interme
diate product and the starting quinone.