Alkylation of hydroquinone with tert-butanol catalyzed by polymer-supported sulfonimide

作者：Zhang Zhengbo; Zhou Fei; Nie Jin^*

来源：Catalysis Letters, 2007, 119(3-4): 271-276.

DOI：10.1007/s10562-007-9230-6

• polymer-supported
• bronsted acid
• perfluorobutylsulfonylimide
• 2-tert-butylhydroqinoe
• 2,5-Di-tert-butylhydroqinoe
• alkylation

Polystyrene with pendant perfluorobutylsulfonylimide (PPFSI) was developed as a novel polymer-supported strong acid catalyst for alkylation of hydroquinone (HQ) with tert-butanol (TBA), and highly selective synthesis of 2-tert-butyl hydroquinone (2-TBHQ) was investigated over PPFSI under various experiment conditions. When the molar ratio of TBA to HQ was 1.2:1, using 3 mol% of PPFSI as catalyst in 1,2-dichloroethane at 130 degrees C for 5 h, the maximum of selectivity (85.9%) of 2-TBHQ was obtained while the conversion of HQ was 76.7%. Compared with other solid acid catalysts PPFSI was found to be a very effective and reusable catalyst for alkylation of hydroquinone with tert-butanol.

• 出版日期2007-12
• 单位华中科技大学