... Abstract. 2-Substituted-4(5)-acyl, 1,2-disubstituted 4-acyl and 1,2-disubstituted-5-acylimidazoles can be specifically prepared from 4-aminoisoxazoles. Download full text in PDF. Tetrahedron Letters,Vo1.26,No.29,~p 3423426,1985 0040039/85 $3.00 + .00 Printed in Great Britain C1985