2,3-Dimethyl-2,5-cyclohexadiene-1,4-dione → Methyl 3-(2,3-dimethyl-1,4-benzoquinonyl)-3,4-dimethylpentanoate

Participants

Reaction Steps

Using an analogous procedure to that described in the first paragraph of the portion of Example 21 which is concerned with the preparation of starting materials, 2,3-dimethyl-1,4-benzoquinone was reacted with methyl 3-oxalooxy-3,4-dimethylpentanoate to give methyl 3-(2,3-dimethyl-1,4-benzoquinonyl)-3,4-dimethylpentanoate in 36% yield; NMR Spectrum: (CDCl3) 0.6 (d, 3H), 0.86 (d, 3H), 1.02 (s, 3H), 1.93 (s, 3H), 1.94 (s, 3H), 2.32 (, 1H), 2.45 (d, 1H), 3.31 (d, 1H), 3.45 (s, 3H), 6.38 (s, 1H).

Provenance & Evidence