N,N-Dialkyl-N'-Chlorosulfonyl Chloroformamidines in Heterocyclic Synthesis. Part IX. Novel Triazolo-Fused Thiatriazoles and Pyrazolo-Fused Oxathiazines
作者:Craig M. Forsyth、Craig L. Francis、Saba Jahangiri、Andris J. Liepa、Michael V. Perkins、Anna P. Young
DOI:10.1071/ch09607
日期:——
N,N-dialkyl-N′-chlorosulfonyl chloroformamidines 1 reacted with 4-substituted urazoles 2 to give [1,2,4]triazolo[1,2-b][1,2,3,5]thiatriazoles 3 in a selective 1,2-NN dinucleophilic mode of reaction. The reaction of 1 with N 1-substituted pyrazol-5-ones 4 afforded pyrazolo[4,3-e][1,4,3]oxathiazines 5 via selective 1,3-CCO dinucleophilic substitution. Compounds 3 and 5 were the sole products isolated
Ñ,Ñ -二烷基Ñ '-chlorosulfonyl chloroformamidines 1与4-取代的urazoles反应2,得到[1,2,4]三唑并[1,2 b ] [1,2,3,5] thiatriazoles 3在选择性1,2-NN双亲核反应模式。1与N 1-取代的吡唑-5-酮4的反应通过选择性的1,3-CCO二亲核取代反应得到吡唑并[4,3- e ] [1,4,3]恶二嗪5。化合物3和5是从各个反应中分离出的唯一产物,并且都代表新的环系统。