N-PROTECTED N-2-ETHOXYMETHYLENE PHENYLGLYCINE HYDRAZIDES AS PRECURSORS OF 1,3,4-OXADIAZOLE DERIVATIVES

[摘要]：New derivatives of N-2-ethoxymethylene phenylglycine hydrazide protected at the amino group by acetyl and tert-butoxycarbonyl were synthesized with reactions of N-protected phenylglycine hydrazides and triethyl orthoesters. They underwent cyclization to the corresponding N-protected 2-aminomethyl-1,3,4-oxadiazoles in the presence of glacial acetic acid.

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