首页>
外国专利>
Synthesis of 7-acetylene-quinone methanide derivatives and their application as retarders of vinyl polymerization
Synthesis of 7-acetylene-quinone methanide derivatives and their application as retarders of vinyl polymerization
展开▼
机译：7-乙炔醌甲烷甲烷衍生物的合成及其在乙烯基聚合反应中的应用
展开▼
页面导航
摘要
著录项
相似文献
摘要
A method for the synthesis of 7-acetylene-quinone methanides, the method comprising the steps of: a) performing a condensation reaction between a 3,5-di-substituted 4-hydroxybenzaldehyde and a secondary amine, thereby forming a Secondary amine quinone methane intermediate compound; b) withdrawing water from the intermediate compound of secondary amine quinone methane in an aliphatic and also high-boiling aromatic hydrocarbon solvent by azeotropic distillation at a temperature between 100 and 160 ° C; c) adding the dehydrated secondary amine quinone methanide intermediate to an organic medium containing a metal acetylide to form a Mannich base intermediate compound, and d) adding a release agent to the Mannich base intermediate compound, to provide a 7-acetylene-quinone methanide, in which 3,5-di-substituted 4-hydroxybenzaldehyde has the following formula: ** Formula ** in which R1 and R2 are independently selected from C4-C18 alkyl, C5 cycloalkyl -C12, phenyl and C7-C15 phenylalkyl; R3 is H.
展开▼
