1068-47-9Relevant academic research and scientific papers
Kinetic peculiarities of the reaction of liquefied hydrogen sulfide with propylene oxide
Malievskii,Shokina
, p. 1072 - 1078 (1999)
The kinetics of the liquid-phase reaction of hydrogen sulfide with propylene oxide was studied. In the presence of excess epoxide, the reaction occurred in two successive macrostages: (1) formation of 2-hydroxypropane-1-thiol and (2) formation of 1,1′-di(2-hydroxypropyl) sulfide. Both of the stages are autocatalytic. 2-Hydroxypropane-1-thiol was mainly formed in the presence of excess H2S. The overall third order of the reaction (the first with respect to each reagent and to 2-hydroxypropane-1-thiol) was found. A kinetic scheme was proposed, and the rate constants of particular stages were calculated. The influence of various catalysts (active carbon, ion-exchange resins, metal oxides, and others) was studied, and the relative efficiency of some of them was determined.
The efficient conversion of H2S into mercaptan alcohols mediated in protic ionic liquids under mild conditions
Hu, Xingbang,Shi, Mingzhen,Tu, Zhuoheng,Wu, Youting,Xiong, Wenjie,Zhang, Xiaomin
supporting information, p. 7969 - 7975 (2021/11/01)
The resource utilization of hydrogen sulfide (H2S) is an important and promising topic in energy chemical engineering. Previous products developed in our group through H2S conversion are sulfur or mercaptan acids. An alternative way to convert H2S is still desirable. Herein, we have developed a green and mild method to convert H2S into mercaptan alcohols by the addition reaction with epoxide mediated in tertiary amine-functionalized protic ionic liquids (PILs). Reaction kinetics, substrate scope, and regeneration experiments have all been explored. Almost quantitative conversion of substrates was realized with a catalytic loading of PILs at 30 °C. Water extraction was used to recycle the catalysts from the reaction system. It is believed that the excellent results, together with its operational simplicity and the ability to successively reuse the catalyst, make this new methodology environmentally benign and cost-effective. The generality of the H2S resource methodology gives it potential for application on an industrial scale.
Novel triethylamine catalyzed S → O acetyl migration reaction to generate candidate thiols for construction of topological and functional sulfur-containing polymers
Wang, Gang,Peng, Li,Zheng, Yaochen,Gao, Yanqin,Wu, Xuedong,Ren, Tianhui,Gao, Chao,Han, Jin
, p. 5674 - 5679 (2015/02/05)
We describe a novel triethylamine catalyzed S → O acetyl migration reaction for yielding thiol compounds under mild conditions through the formation of a transitional 5-membered ring. A series of epoxy compounds have been transformed into their thiol counterparts which could be used for construction of topological and functional sulfur-containing polymers. The one-pot two-step processes including the S → O acetyl migration and the following thiol-click reactions avoided separation of thiol intermediates. Applying these processes on a new-type latent polythiols overcomes crosslinking problem usually met in preparation of multithiol compounds due to the formation of disulfide bonds. This journal is
Enzymatic kinetic resolution of organochalcogenides in supercritical CO2
Gariani, Rogério A.,Luengo, Fernando A.G.,Vale, Luiz A.S.,Bazito, Reinaldo C.,Comasseto, Jo?o V.
supporting information; experimental part, p. 3336 - 3338 (2011/06/28)
1-(Phenylthio)-, 1-(phenylseleno)- and 1-(phenyltelluro)-propan-2-ol were efficiently resolved by CAL-B in sc-CO2.
Regio- and enantioselective ring-opening of epoxides with HMDST: A straightforward access to 1,2-mercaptoalcohols
Degl'Innocenti, Alessandro,Capperucci, Antonella,Cerreti, Arianna,Pollicino, Salvatore,Scapecchi, Serena,Malesci, Irene,Castagnoli, Giulio
, p. 3063 - 3066 (2007/10/03)
TBAF-catalyzed reaction of a range of substituted epoxides with hexamethyldisilathiane smoothly affords a direct and simple access to β-mercaptoalcohols in a highly regio- and stereo-selective way. Georg Thieme Verlag Stuttgart.
Triphendioxazine dyestuffs
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, (2008/06/13)
The novel triphendioxazine dyestuffs of the formula STR1 in which the substituents R, R', T1, T2, X, Y and n have the meanings given in the description are highly suitable for the dyeing and printing of cellulose-containing or amido-containing material.
Synthesis and Insecticidal Activity of Oxazaphospholidines, Oxathiaphospholanes, and Thiazaphospholidines
Wu, Shao-Yong,Hirashima, Akinori,Takeya, Ryuko,Eto, Morifusa
, p. 2911 - 2918 (2007/10/02)
Fifty-five new five-membered cyclic organophosphorus compounds including oazaphospholidines, thiazaphospholidines, and oxathiaphospholanes were synthesized, which have substituents at 4- or/and 5-positions besides at the 2-position.The thiazaphospholidines showed the highest insecticidal activity followed by oxathiaphospholanes and oxazaphospholidines.The position preference of substituents in insecticidal activity was most obvious in the oxazaphospholidines.It was preferable for insecticidal activity to have the substituent near the more basic atom: the 4-position for thiazaphospholidine and oxazaphospholidine, the 5-position for oxathiaphospholane, with the exception of 4- or 5-phenyl oxazaphospholidine.
