o-Quinone methide as a common intermediate in the pyrolysis of o-hydroxybenzyl alcohol, chroman and 1, 4-benzodioxin

OJ Epema, WB van Scheppingen

Index: Dorrestijn, Edwin; Epema, Onno J.; Van Scheppingen, Wibo B.; Mulder, Peter Journal of the Chemical Society. Perkin Transactions 2, 1998 , # 5 p. 1173 - 1178

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Citation Number: 19

Abstract

The product composition in the very low pressure pyrolysis (550–1210 K) of o- hydroxybenzyl alcohol (HBA), 3, 4-dihydro-2H-1-benzopyran (chroman), and 1, 4- benzodioxin (BD) indicates that o-quinone methide (o-QM) is the common intermediate in each case. At complete conversion of HBA, o-QM was observed as the only product and the mass spectrum of o-QM could be obtained. At higher temperatures (> 950 K), o-QM is ...

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