描述了一种方便的方法,用于合成与三唑或嘧啶环稠合的新型噻唑并[4,5- b ]吡啶。2-氯-3-硝基吡啶与1,3-(S,N)-双亲核试剂(三唑-5-硫醇,4-氧嘧啶-2-硫酮)的碱促进反应导致氯原子的亲核取代,随后S–N型Smiles重排,然后进行硝基的亲核取代。与嘧啶-2-硫酮的反应以一锅法进行,而在三唑-5-硫醇的情况下,发现分离中间取代产物是优选的。
描述了一种方便的方法,用于合成与三唑或嘧啶环稠合的新型噻唑并[4,5- b ]吡啶。2-氯-3-硝基吡啶与1,3-(S,N)-双亲核试剂(三唑-5-硫醇,4-氧嘧啶-2-硫酮)的碱促进反应导致氯原子的亲核取代,随后S–N型Smiles重排,然后进行硝基的亲核取代。与嘧啶-2-硫酮的反应以一锅法进行,而在三唑-5-硫醇的情况下,发现分离中间取代产物是优选的。
Synthèse et activitè antithyroïdienne de dérivés du triazole
作者:JF Lagorce、F Comby、J Buxeraud、C Raby
DOI:10.1016/0223-5234(92)90149-u
日期:1992.6
The synthesis of nitrogen heterocycle derivatives (pyridine, pyrimidine, pyrazine) of 3-mercapto-1,2,4-triazole and 3-mercapto-1-methyl-1,2,4-triazole is described. The antithyroid activity of compounds is evaluated by action on molecular iodine, by action on peroxidase and in vivo on the rat (hormones levels, histology). Pyridyl and pyrimidyl derivatives of mercaptotriazole and mercaptomethyltriazole, as well as (6-methoxy-pyridyl) mercaptomethyltriazole, are the most active. Study over one month does not reveal agranulocytosis.
Simple Synthesis of Fused Thiazolo[4,5-b]pyridines through Successive SNAr Processes
作者:Alexey M. Starosotnikov、Maxim A. Bastrakov、Vadim V. Kachala、Ivan V. Fedyanin、Tatyana A. Klimova、Victoria V. Ivanova、Igor L. Dalinger
DOI:10.1055/s-0040-1705960
日期:2021.2
A convenient process is described for the synthesis of novel thiazolo[4,5-b]pyridines fused with triazole or pyrimidine rings. The base-promoted reactions of 2-chloro-3-nitropyridines with 1,3-(S,N)-binucleophiles (triazole-5-thiols, 4-oxopyrimidine-2-thiones) resulted in nucleophilic substitution of the chlorine atom and subsequent S–N-type Smiles rearrangement followed by nucleophilic substitution
描述了一种方便的方法,用于合成与三唑或嘧啶环稠合的新型噻唑并[4,5- b ]吡啶。2-氯-3-硝基吡啶与1,3-(S,N)-双亲核试剂(三唑-5-硫醇,4-氧嘧啶-2-硫酮)的碱促进反应导致氯原子的亲核取代,随后S–N型Smiles重排,然后进行硝基的亲核取代。与嘧啶-2-硫酮的反应以一锅法进行,而在三唑-5-硫醇的情况下,发现分离中间取代产物是优选的。