Abstract
Depending upon the experimental conditions trimethyl-, triethyl-, and triisopropyl phosphites react with oxazolidinedione (1a) to give acid 2a and/or the corresponding alkyl ester 2b, c. Phenylacetamide (3) is also formed in a small amount. On the other hand, trialkyl phosphites cause the quantitative conversion of dione 1b into diphenylacetamide. The identity of the new compounds is established from analytical, chemical and spectroscopic evidence.