107323-70-6Relevant articles and documents
Synthesis of the Nitrile and Some Esters of 3,3-Dimethyl-2-oxochroman-4-acetic Acid
Bojilova, A.,Ivanov, Chr.
, p. 415 - 416 (1986)
It is shown that the previously found rearrangement can be applied on the nitrile 4 (X=CN) when the anhydride used possesses only one α-hydrogen atom.Refluxing of this nitrile with isobutyric anhydride in the presence of triethylamine leads to the expected rearrangement product 5 (X=CN).Making use of the same anhydride, the esters 4 (X=COOR) are converted into esters 5 (X=COOR).