| http://www.w3.org/ns/prov#value | - In some embodiments, reacting the hydrogen sulfide and the unsaturated esters occurs at a temperature of greater than ???20??? C. As another example, the process is a continuous process and the reaction of the hydrogen sulfide and the unsaturated esters is performed in an absence of a solvent, at a temperature of greater than ???20??? C., and is initiated by UV radiation.
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