作者:Ondřej Rudolf、Vladimír Mrkvička、Antonín Lyčka、Michal Rouchal、Antonín Klásek
DOI:10.1002/hlca.201200049
日期:2012.8
starting compounds, C‐debutylation was also observed. If a Bn group is present at C(3), rapid C‐debenzylation of the starting thiocyanates occurred, yielding [1,3]oxathiolo[4,5‐c]quinoline‐2,4‐diones, and mixtures of mono‐, di‐, and trisulfides derived from 4‐hydroxy‐3‐sulfanylquinoline‐2‐ones. The reaction mechanism of all of the transformations is discussed. All new compounds were characterized by IR
所述Riemschneider 3- thiocyanatoquinoline -2,4(1反应ħ,3 ħ) -二酮用浓 研究了H 2 SO 4。使用不同的反应条件,分离出13种反应产物。在C(3)处带有Me,Et或Bu基团的化合物主要提供[1,3] thiazolo [5,4 - c ] quinoline-2,4-diones和1,9b-dihydro-9b-hydroxythiazolo [5, 4 ‐ c ]喹啉-2,4-二酮。在起始化合物的3-Bu衍生物的情况下,还观察到C-去丁基化。如果在C(3)上存在一个Bn基团,则发生了起始硫氰酸盐的快速C-去苄基化反应,产生了[1,3] oxathiolo [4,5- c]]]]喹啉-2-,4-二酮,以及源自4-羟基-3-硫烷基喹啉-2-一的一硫化物,二硫化物和三硫化物的混合物。讨论了所有转化的反应机理。所有新化合物均通过IR,1 H-和13