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。
Synthesis of 1,3,4-thiadiazolines from 1,2-dithiole-3-thiones
作者:Vladimir A. Ogurtsov、Oleg A. Rakitin、Charles W. Rees、Alexey A. Smolentsev
DOI:10.1070/mc2005v015n02abeh002086
日期:2005.1
The thiocarbonyl group of 4,5-dichloro-1,2-dithiole-3-thione reacts as a 1,3-dipolarophile towards diaryl nitrile imines by 1,3-dipolar cycloaddition followed by opening of the dithiole ring with loss of sulfur to give 5-methylene-1,3,4-thiadiazolines; this reaction together with nucleophilic displacement (before or after cycloaddition) of the selectively reactive 5-chlorine atom provides a rapid access to stable 5-methylene-1,3,4-thiadiazolines.
WENTRUP G.-J.; KOEPKE M.; BOBERG F., SYNTHESIS <SYNT-BF>, 1975, NO 8, 525-526
作者:WENTRUP G.-J.、 KOEPKE M.、 BOBERG F.
DOI:——
日期:——
Synthesis and thermal stability of imino-1,3-dithietanes. Influence of structural factors
作者:V. A. Ogurtsov、Yu. V. Karpychev、P. A. Belyakov、Yu. V. Nelyubina、K. A. Lyssenko、O. A. Rakitin
DOI:10.1007/s11172-010-0028-0
日期:2009.2
The reaction of 1,2-dithiol-3-thiones with isonitriles at room temperature affords imino-1,3-dithietanes. The reaction is reversible. According to 1H NMR spectroscopy, the rise of the temperature shifts the equilibrium to the starting compounds. The structure of one of the imino-1,3-dithietanes was established by X-ray diffraction.