72442-70-7Relevant articles and documents
Quinones and Quinone Methides. VII. Reactions of 1,4-Naphthoquinone and 1,4-Benzoquinones with 4-Hydroxy-2H-1-benzopyran-2-one and 5,5-Dimethylcyclohexane-1,3-dione in Acid Solutions
Jurd, Leonard
, p. 1603 - 1610 (2007/10/02)
4-Hydroxy-2H-1-benzopyran-2-one (4) reacts with 1,4-naphthoquinone, 2-methoxy-1,4-benzoquinone and 1,4-benzoquinone in aqueous acetic acid solutions to yield the quinone (6) and the quinols (11) and (2), respectively.With 5,5-dimethylcyclohexane-1,3-dione, 1,4-naphthoquinone forms a bisfurano compound (9) while 1,4-benzoquinone yields the bisfurano compound (18) and the monophenolic furano derivative (17).The blue product formed by acid catalysed dimerization of 2-methoxy-1,4-benzoquinone forms a diacetate, the n.m.r. spectra of which is in accord with structure (15b).
