化学
对甲苯磺酸
钴
催化作用
有机化学
氯化物
小学(天文学)
二氯乙烷
物理
天文
作者
Subbarayan Velusamy,J. Sravan Kumar,Tharmalingam Punniyamurthy
标识
DOI:10.1016/j.tetlet.2003.10.106
摘要
Cobalt(II) chloride hexahydrate (CoCl2·6H2O) has been found to catalyze the tosylation of both aliphatic and aromatic alcohols with p-toluenesulfonic acid (p-TsOH) in high yields in 1,2-dichloroethane under reflux (ca. 80 °C). In the case of aliphatic alcohols, secondary alcohols undergo tosylation chemoselectively in the presence of primary hydroxy groups.
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