A Generalized and Efficient Synthesis of 3-Amino-, 3-(N-Alkylamino)-, 3-(N,N-Dialkylamino)-5-alkyl-1,2,4-oxadiazoles by Irradiation of 3-Alkanoylamino-4-phenyl-1,2,5-oxadiazoles (Furazans)
作者:Silvestre Buscemi、Nicolò Vivona、Tullio Caronna
DOI:10.1055/s-1995-4031
日期:1995.8
Irradiation of 3-alkanoylamino-4-phenyl-1,2,5-oxadiazoles (furazans) at λ=310 nm in methanol and in the presence of ammonia, primary or secondary aliphatic amines produced excellent yields of 3-amino-, 3-(N-alkylamino)-, 3-(N,N-dialkylamino)-5-alkyl-1,2,4-oxadiazoles.
在甲醇中,在氨的存在下,用波长为310纳米的紫外线照射3-烷基氨基-4-苯基-1,2,5-恶二唑(呋喃),可生成3-氨基、3-(N-烷基氨基)、3-(N,N-二烷基氨基)-5-烷基-1,2,4-恶二唑,产率极高。