ZrCl4 as an Efficient Catalyst for Selective Tosylation of Alcohols with p-Toluenesulfonic Acid
Tosylation of alcohols has directly been carried out with p-toluenesulfonic acid in methylene chloride under reflux using ZrCl4 as a catalyst. Primary alcohols were found to be tosylated chemoselectively over secondary alcohols
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Chemistry Letters
Vol. 33 (2004) , No. 11 p.1428
ZrCl4 as an Efficient Catalyst for Selective Tosylation of Alcohols with p-Toluenesulfonic Acid
Biswanath Das and Vtukuri Saidi Reddy
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Zinc Bromide-Promoted Tosylation of Alcohols
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The combination of zinc bromide with tosyl chloride promoted sulfonylation, allowing temperature-controlled regioselective sulfonylation of carbohydrates which possess both primary and secondary hydroxy groups.
Chemistry Letters
Vol. 30 (2001) , No. 7 p.706
Zinc Bromide-Promoted Tosylation of Alcohols Allows Efficient Temperature-Controlled Primary Hydroxy Sulfonylation
Hatsuo Yamamura, Jyumpei Kawasaki, Hirokazu Saito, Shuki Araki and Masao Kawai
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