Synthesis of 6,7-Dihydropyrrolo[2,1-<i>c</i>
][1,3]thiazino[3,2-<i>a</i>
]pyrazine-4(11b<i>H</i>
)-(thi)ones from 1,2-Dithiolo-3-(thi)ones
作者:Vladimir A. Ogurtsov、Yury V. Karpychev、Yulia V. Nelyubina、Petr V. Primakov、Panayiotis A. Koutentis、Oleg A. Rakitin
DOI:10.1002/ejoc.201900142
日期:2019.7.14
Both monocyclic and fused 1,2‐di‐thiolo‐3‐(thi)ones underwent addition of 3,4‐dihydropyrrolo[1,2‐a]pyrazine with selective extrusion of S2 atom and formation of 6,7‐dihydropyrrolo[2,1‐c][1,3]thi‐azino[3,2‐a]pyrazine‐4(11bH)‐(thi)ones. 1,2‐Dithiolo‐3‐one moiety was found more reactive than the corresponding 1,2‐dithiole‐3‐thione one.
单环和稠合的1,2-二硫代3-(thi)酮都加入了3,4-二氢吡咯并[1,2- a ]吡嗪,并选择性挤出了S2原子并形成了6,7-二氢吡咯并[2] ,1‐ c ] [1,3]噻嗪[3,2‐ a ]吡嗪‐4(11b H)‐(噻吩)酮。发现1,2-二硫代-3-酮比相应的1,2-二硫代-3-硫酮具有更高的反应活性。