On Triazoles.<b>XXXII</b>. The reaction of 5-amino-1<i>H</i>-1,2,4-triazolylcarbothiohydrazides with β- and γ-oxo-esters
作者:József Reiter、József Barkóczy、István Pallagi
DOI:10.1002/jhet.5570300524
日期:1993.10
5-Amino-lH-1,2,4-triazolylcarbothiohydrazides gave β and γ-oxo-esters in boiling ethanol [1,2,4]triazolo- [1,5-d][1,2,4,6]tetrazepine-5-thiones 3. Analogously ethyl 2-oxocyclohexanecarboxylate provided a mixture of two diastereomeric spiro derivatives 5 and 6. At 130°, 2-acetonyl-5-methyl-4,5-dihydro-1,3,4-oxadiazole-5-thione (8) was formed. Ring closure of 3e (R1 = CH3, R2 = CH2CH2COOEt, Q = morpholino)
5-氨基-1 H -1,2,4-三唑基碳硫酰肼在沸腾的乙醇[1,2,4]三唑-[1,5- d ] [1,2,4,6]中生成β和γ-氧代酯四氮杂-5-硫酮3。类似地,2-氧代环己烷甲酸乙酯提供了两种非对映异构螺衍生物5和6的混合物。在130°下形成2-丙酮基-5-甲基-4,5-二氢-1,3,4-恶二唑-5-硫酮(8)。3e的闭环(R 1 = CH 3,R 2 = CH 2 CH 2 COOEt,Q =吗啉代)导致异构体吡咯并[2,1- g ] [1,2,4]三唑并[1,5- d] [1,2,4,6] tetrazepin-8(11 H)-one(12)和pyrrolo [1,2- f ] [1,2,4] triazolo- [1,5- d ] [1, 2,4,6] tetrazepin-10(7 H)-一(13)衍生物表示两个新的环系统。