3489-31-4Relevant articles and documents
The Synthesis of 1,3-Dithiolane-2-thione Derivatives
Taguchi, Yoichi,Yanagiya, Koshin,Shibuya, Isao,Suhara, Yasuo
, p. 727 - 730 (1987)
The reaction of 2,2-dimethylthiirane with carbon disulfide in the presence of triethylamine was accelerated under high pressure to give 4,4-dimethyl-1,3-dithiolane-2-thione nearly quantitatively.The activation volume of this reaction at 40 deg C was estimated to be -41 ml mol-1.The rate of the reaction was proportional to the amount of triethylamine when a limited amount of triethylamine was used.The reaction of 2-methylthiirane, 2-hexylthiirane, 1,2-epithiocyclohexane, and 2-phenylthiirane with carbon disulfide gave the corresponding 1,3-dithiolane-2-thione derivatives in good yields. 2-Chloromethylthiirane was less reactive to carbon disulfide than other thiiranes under high pressure.Tertiary amines such as N,N-dimethylethylamine, pyridine, and N-methylmorpholine were good catalysts of the reaction.
Metal-Organic Frameworks of Cu(II) Constructed from Functionalized Ligands for High Capacity H2 and CO2 Gas Adsorption and Catalytic Studies
Bharadwaj, Parimal K.,Chattaraj, Pratim Kumar,Chatterjee, Nabanita,De, Dinesh,Gupta, Mayank,Oliver, Clive L.,Saha, Ranajit
, p. 1810 - 1822 (2020/02/28)
Two Cu(II)-based metal-organic frameworks (MOFs) having paddle-wheel secondary building units (SBUs), namely, 1Me and 1ipr, were synthesized solvothermally using two new bent di-isophthalate ligands incorporating different substituents. The MOFs showed high porosity (BET surface area, 2191 m2/g for 1Me and 1402 m2/g for 1ipr). For 1Me, very high CO2 adsorption (98.5 wt % at 195 K, 42.9 wt % at 273 K, 23.3 wt % at 298 K) at 1 bar was found, while for 1ipr, it was significantly less (14.3 wt % at 298 K and 1 bar, 54.4 wt % at 298 K at 50 bar). 1Me exhibited H2 uptake of 3.2 wt % at 77 K and 1 bar of pressure, which compares well with other benchmark MOFs. For 1ipr, the H2 uptake was found to be 2.54 wt % under similar experimental conditions. The significant adsorption of H2 and CO2 for 1Me could be due to the presence of micropores as well as unsaturated metal sites in these MOFs besides the presence of substituents that interact with the gas molecules. The experimental adsorption behavior of the MOFs could be justified by theoretical calculations. Additionally, catalytic conversions of CO2 and CS2 into useful chemicals like cyclic carbonates, cyclic trithiocarbonates, and cyclic dithiocarbonates could be achieved.
Synthesis of cyclic di- and trithiocarbonates from epoxides and carbon disulfide catalyzed by N-heterocyclic carbene
Cao, Jinsong,Yu, Meng,Li, Hanzhu,Wang, Liang,Zhu, Xu,Wang, Guangying,Shi, Yanhui,Cao, Changsheng
, p. 5323 - 5330 (2015/07/08)
The synthesis of cyclic di- and trithiocarbonates from the reaction of epoxides and carbon disulfide catalyzed by N-heterocyclic carbene prepared in situ is described. 1,3-Oxathiolane-2-thiones or 1,3-dithiolane-2-thiones was obtained in high yield with good selectivity when the reactions were carried out with 4 in DMSO at 100°C in the presence of K2CO3. The possible catalytic mechanism was proposed.
Composition, Synthesis, and Use of New Substituted Pyran and Pterin Compounds
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Page/Page column 6, (2012/10/08)
The present invention relates to substituted pterin compounds, their synthesis and use. In particular, the present invention relates to a new precursor compound and its analogs for synthesizing a new substituted pterin compound and its analogs. These new
