[EN] A THIONATION PROCESS AND A THIONATING AGENT<br/>[FR] PROCÉDÉ DE THIONATION ET AGENT DE THIONATION
申请人:VIRONOVA AB
公开号:WO2012104415A1
公开(公告)日:2012-08-09
A process for transforming a group >C=O (I) in a compound into a group >C=S (II) or into a tautomeric form of group (II) in a reaction giving a thionated reaction product, by use of crystalline P2S5·2 C5H5N as a thionating agent. A thionating agent which is crystalline P2S5·2 C5H5N
A process for transforming a group >C=O (I) in a compound into a group >C=S (II) or into a tautomeric form of group (II) in a reaction giving a thionated reaction product, by use of crystalline P2S5·2 C5H5N as a thionating agent. A thionating agent which is crystalline P2S5·2 C5H5N.
将化合物中的一个羰基 >C=O (I) 转化为一个硫代基 >C=S (II) 或者转化为羰基 (II) 的互变异构体,从而在反应中生成一种硫代反应产物的过程,使用晶体 P2S5·2 C5H5N 作为硫代试剂。一种晶体 P2S5·2 C5H5N 的硫代试剂。
Thionations Using a P<sub>4</sub>S<sub>10</sub>−Pyridine Complex in Solvents Such as Acetonitrile and Dimethyl Sulfone
作者:Jan Bergman、Birgitta Pettersson、Vedran Hasimbegovic、Per H. Svensson
DOI:10.1021/jo101865y
日期:2011.3.18
Tetraphosphorusdecasulfide (P4S10) in pyridine has been used as a thionatingagent for a long period of time. The moisture-sensitive reagent has now been isolated in crystalline form, and the detailed structure has been determined by X-ray crystallography. The thionating power of this storable reagent has been studied and transferred to solvents such as acetonitrile in which it has proven to be synthetically
四硫化二磷(P 4 S 10)中的吡啶已长期用作硫代剂。现在已经以结晶形式分离出对水分敏感的试剂,并且已经通过X射线晶体学确定了详细的结构。已经研究了这种可储存试剂的去硫能力,并将其转移到诸如乙腈之类的溶剂中,在该溶剂中已证明其在合成上是有用的并且具有非凡的选择性。它的性能已经与所谓的Lawesson试剂(LR)进行了比较。特别有趣的是在相对较高的温度(约165°C)下以二甲基砜为溶剂进行硫磺化的结果。在这些条件下,例如,a啶酮和3-乙酰吲哚可以迅速转化为相应的亚硫代衍生物。甘氨酰甘氨酸类似地得到哌嗪去甲酮。在这些温度下 LR由于快速分解而效率低下。硫代产物通常更清洁并且更容易获得,因为在结晶试剂中,常规试剂P中始终存在杂质吡啶或LR中的4 S 10已被除去。
Synthesis of Indole Derivatives by [2 + 2] Photocycloaddition of Indoline-2-thiones with alkenes and photodesulfurization of indoline-2-thiones
作者:Takehiko Nishio、Mitsuru Oka
DOI:10.1002/hlca.19970800205
日期:1997.3.24
The photochemical synthesis of indolederivatives starting from the indoline-2-thiones 1 is described. Irradiation of indoline-2-thiones 1 in the presence of alkenes 3 gave 2-alkyl-3H-indoles 4–7 or 2-alkylindoles 8–22 through the ring cleavage of the intermediates, spirocyclic amino-thietanes, initially derived by [2 + 2] cycloaddition of the CS bond of 1 and the CC bond of 3. Irradiation of 1 in
Dirhodium(<scp>ii</scp>) tetraacetate catalysed reactions of diazo thioamides: isolation and cycloaddition of anhydro-4-hydroxy-1,3-thiazolium hydroxides (thioisomünchnones), an approach to analogues of dehydrogliotoxin
作者:Christopher J. Moody、Alexandra M. Z. Slawin、David Willows
DOI:10.1039/b305698h
日期:——
masked thiocarbonylylide undergoes 1,3-dipolarcycloaddition with N-methylmaleimide and maleic anhydride to give the exo-cycloadducts 10 and 11, characterised by X-ray crystallography. The thioisomünchnone 18, derived from diazo thioamide 17, is an extremely stable crystalline mesoionic system which can be characterised by X-ray crystallography but fails to undergo intramolecularcycloaddition. The