161196-23-2Relevant articles and documents
Regio- and Stereoselective Synthesis of Dithiocarbonates under Ambient and Solvent-Free Conditions
Diebler, Johannes,Spannenberg, Anke,Werner, Thomas
, p. 2027 - 2030 (2016)
Herein, we report on the utilization of readily available lithium tert-butoxide as an efficient catalyst for the addition of carbon disulfide to terminal and internal epoxides under ambient conditions. Notably, the reaction proceeds regio- and stereoselectively. By applying the optimized conditions, 14 terminal and internal epoxides were converted. The desired cyclic dithiocarbonates were isolated in yields up to 95 % after simple filtration over silica. NMR spectroscopy experiments to identify the mode of activation were performed, and they indicated activation of carbon disulfide by the catalyst. The reaction of cis-2,3-butyleneoxide gave only the trans-dithiocarbonate, whereas the conversion of (R)-propylen oxide gave the respective thiocarbonate stereoselectively as one enantiomer (>99 % ee) in 87 % yield.
Organocatalytic one-pot synthesis of functionalized 1,3-oxathiolanes and 1,3-thiazolidines
Ghazanfarpour-Darjani, Majid,Khodakarami, Alieh
, p. 829 - 835 (2016/03/23)
An efficient organocatalytic approach for the synthesis of 1,3-oxathiolanes and 1,3-thiazolidines is reported. In this methodology, conjugated base of nitromethane was employed as a potential organocatalyst to promote cyclization reaction between strained
Cyclic dithiocarbonates, their preparation and application
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Page/Page column 13, (2010/02/10)
The present invention relates to cyclic 5-membered ring dithiocarbonate compounds of the general formula wherein, in the formula, R1, R2, and R3 are the same or different, each of which denotes hydrogen or a C1 to C4 strai