Citation: Rui Lian SHAO, Cheng Xin ZHI, You Quan ZHU, Jie You XUE. HIGHLY REGIOSELECTIVE O-AND N-ACYLATION OF 5-METHYL-3-HYDROXYISOXAZOLE[J]. Chinese Chemical Letters, ;1992, 3(3): 175-176. shu

HIGHLY REGIOSELECTIVE O-AND N-ACYLATION OF 5-METHYL-3-HYDROXYISOXAZOLE

National Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin 300071

Received Date: 21 November 1991

Fund Project: This project was supported by the NSFC.

Acylation of 5-methyl-3-hydroxyisoxazole (1) with 3-substituted cyclopropanecarboxylic chlorides (3) in the presence of triethylamine (TEA) in acetonitrile yields predominantly O-acylated products (4).The N-acyl isomers (5) are afforded regiospecifically using trimethylsilyl ether of 3-hydroxyisoxazole (2).
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