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BY-NC-ND 3.0 license Open Access Published by De Gruyter June 2, 2014

Methylierung 3,3′-dihydroxylierter 2,2′-Binaphthyl-1,4;1′,4′-dichinone / Methylation of 3,3′-Dihydroxylated 2,2′-Binaphtho-1,4;1′,4′-quinones

  • Hartmut Laatsch

Monomeric hydroxy-p-quinones (1) are in equilibrium with the corresponding o-quinones (2) and on methylation, a mixture of both isomeric ethers is obtained. In contrast, dimeric hydroxynaphthoquinones with the 3 a-skeleton in treatment with diazomethane are yielding only p-quinone ethers of type 3b.

Received: 1989-10-18
Published Online: 2014-6-2
Published in Print: 1990-3-1

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