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2004
Protection
O 0345
51- 053
Studies on Novel Synthetic Methodologies. Part 48. An Efficient and Selective
Tosylation of Alcohols with p-Toluenesulfonic Acid. — Primary and secondary aliphatic alcohols are readily converted to the corresponding tosylates using toluenesulfonic acid in the presence of silica chloride as the catalyst. Due to the different reaction times, selective protection of secondary alcohols over primary ones is possible.
No reaction is observed for tertiary alcohols and phenols. — (DAS*, B.; REDDY, V.
S.; REDDY, M. R.; Tetrahedron Lett. 45 (2004) 36, 6717-6719; Org. Chem. Div.,
Indian Inst. Chem. Technol., Hyderabad 500 007, India; Eng.) — Mais
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