TILLEY J. W.; RAMUZ H.; LEVITAN P.; BLOUNT J. F., HELV. CHIM. ACTA, 1980, 63, NO 4, 841-854
作者:TILLEY J. W.、 RAMUZ H.、 LEVITAN P.、 BLOUNT J. F.
DOI:——
日期:——
The Synthesis of 3,5-Diamino-1,2,4-oxadiazoles. 2nd Communication
作者:Jefferson W. Tilley、Henri Ramuz、Paul Levitan、John F. Blount
DOI:10.1002/hlca.19800630412
日期:1980.6.6
The 5-amino-3-arylamino-1,2,4-oxadiazoles 2 are conveniently prepared by oxidative cyclization of the arylamidinoureas 10. The process is also capable of producing a variety of the 5-substituted-amino analogs 32 when the appropriately substituted guanidine 31 is employed as the substrate. Two different types of rearrangement leading to triazol-3-ones accompany cyclization depending on the choice of