1,3-Benzodioxins: The Condensation between p-substituted Phenols and Formaldehyde

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Title:	1,3-Benzodioxins: The Condensation between p-substituted Phenols and Formaldehyde 1,3-Benzodioxins:對位取代酚和甲醛聚合反應的研究
Authors:	陳淑玲葉美玲鄭恆聰林立錦
Contributors:	化學系
Keywords:	甲醛對位聚合反應酚
Date:	1993-05
Issue Date:	2016-04-13 09:43:42 (UTC+8)
Abstract:	對位取代酚和聚甲醛在對甲基苯磺酸的催化下，可聚合得到之主要產物為6．substituted-1,3-benzodioxin和/或bis-(6-substituted-1,3-benzodioxin-8-yl)methane。若酚的對位取代基為拉電子性時，其產物通常為6-substituted-1,3-benzodioxin，若酚的對位取代基為烷基或溴基時，則兩種產物都會生成。 Under an acidic condition, the condensation of p-substituted phenols andparaformaldehyde gave 6-substituted-1,3-benzodioxin and/or bis-(6-ubstituted-1,3-benzodioxin-8-yl)methane as the major products. The p-substitutedphenols with electron withdrawing groups attached gave only the 6-substituted-1, 3-benzodioxin products, while the p-alkylphenols and p-bromophenolyielded both products.
Relation:	華岡理科學報 10 民82.05 頁71-83
Appears in Collections:	[Department of Chemistry & Graduate Institute of Applied Chemistry ] journal articles

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