A. Boruah et al., A facile preparation of 4-arylidene-4,5-dihydrooxazol-5-ones using zeoliteas a cyclodehydrating agent, J CHEM R-S, (9), 1998, pp. 614-615
An efficient new method for the azlactonisation of acylamino acids using ze
olite under mild conditions is described; the method is fairly general as w
ell as providing high yields.