Practical and Efficient Acylation and Tosylation of Sterically Hindered Alcohols Catalyzed with 1-Methylimidazole
摘要
Acylation of sterically hindered alcohols is frequently encountered in synthetic chemistry. An efficient and mild procedure for tosylation and esterification of sterically hindered hydroxyl groups with p-TsCl, Ac2O and Bz2O in the presence of 1-methylimidazole is described. It was observed that auxiliary base, triethylamine, accelerates the acylation reaction. Keywords Esterification; Imidazole; Nucleophilic catalysis; Organocatalysis Article ID 1005-9040(2010)-01-055-05
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WU Qin-pei, Hua Liu, Haixia Liu, 等. Practical and Efficient Acylation and Tosylation of Sterically Hindered Alcohols Catalyzed with 1-Methylimidazole[J]. 未知来源, 2010.
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