An unusual reaction of Lawesson's reagent with 1,8-diketones: A synthesis of fused 1,4-dithiins and thiophenes
作者:Turan Ozturk
DOI:10.1016/0040-4039(96)00396-6
日期:1996.4
Reaction of 1,8-diketones 3 with Lawesson'sreagent 8 resulted in the formation of five and six-membered rings 5–7, 18, depending on the nature of the substituents. Product 6 is converted in two steps to the unsymmetric ‘ET’ analogue 20, containing an extra double bond.
6-(4-Methoxyphenyl)thieno[2,3-d][1,3]dithiole-2-thione at 150K
作者:T. Ozturk、J. D. Wallis
DOI:10.1107/s0108270196005264
日期:1996.10.15
The structure determination at 150 K of 6-(4-methoxyphenyl)thieno[2,3-d][1,3]dithiole-2-thione, C12H8OS4, which was obtained from a novel rearrangement reaction, is the first measurement of this heterocyclic system. The bond lengths in the thiophene ring are not perturbed significantly by the fusion of the second ring; however, there is a degree of asymmetry in the bond lengths of the dithiole ring.
[EN] THE SYNTHESIS OF EXTENDED BIS(ETHYLENEDITHIO)TETRATHIAFULVALENE DERIVATIVES AND THEIR DIHYDROXYL ANALOGUES<br/>[FR] SYNTHESE DE DERIVES DE BIS(ETHYLENEDITHIO)TETRATHIAFULVALENE ALLONGES ET LEURS ANALOGUES DIHYDROXYLES
申请人:TUBITAK MARMARA RES CT
公开号:WO2001032645A1
公开(公告)日:2001-05-10
The present invention describes the synthesis of six novel derivatives of bis(ethylenedithio)tetrathiafulvalene (BEDT-TTF), utilising the recently developed reaction of 1,8-diketones with Lawesson's reagent. These new BEDT-TTF derivatives (1)-(6) have potential to delocalise the positive charges formed during change-transfer salts to the peripheral. In addition to their positive charge delocalisation feature, the compounds (1)-(3) have the potential of being introduced hydrogen bonding groups and the compound (4)-(6) already have hydrogen bonding hydroxyl groups. All the new BEDT-TTF (7) derivatives described in this invention have shown comparative CV measurements with the BEDT-TTF. Each of these bis(ethylenedithio)tetrathiafulvalene derivatives of the present invention has a unique and novel structure which can not be found in the prior art and is useful for the development of new organic charge-transfer complexes.
An in depth study of the formation of new tetrathiafulvalene derivatives from 1,8-diketones
作者:Figen Turksoy、John D Wallis、Umit Tunca、Turan Ozturk
DOI:10.1016/j.tet.2003.08.042
日期:2003.10
of the reactions of phosphorus pentasulfide and Lawesson'sreagent with a series of 4,5-bis(RCOCH2S)-1,3-dithiole-2-thiones (R=Ph, 4-MeOC6H4, 4-Br C6H4, Me) has been carried out. These reactions lead to fusion of either an unsaturated 1,4-dithiin ring or a thiophene to the dithiole; the former in higher yield, while the latter is a significant product in the reactions with Lawesson'sreagent; as well
五硫化二磷和Lawesson与一系列的4,5-双(RCOCH试剂的反应的详细的研究2 S)-1,3-二硫杂环-2-硫酮(R =苯基,4- MeOC 6 ħ 4,4- Br C 6 H 4,Me)已经进行。这些反应导致不饱和的1,4-二硫辛环或噻吩与二硫醇融合;前者的收率较高,而后者是与劳森试剂反应的重要产物。以及少量次要产品。详细讨论了这些产品的机械合理性。新的稠合二硫醇已被转化为新颖的稠合TTF衍生物系列。