Synonyms:N-acetyl thiazolidinethione;thiazolidinethione;thiazoline-2-thione
99% *data from raw suppliers
2-Mercaptothiazole *data from reagent suppliers
The research focuses on the stereoselective synthesis of (2R,5S)-2-methyl-5-hexanolide, a sex pheromone of the carpenter bee Xylocopa hirutissima. The purpose of this study is to develop a simple and feasible route to synthesize this pheromone with high enantiometric purity and yield. The researchers achieved the synthesis in six steps with an overall yield of 33%. Key steps include an asymmetric N-acetyl thiazolidinethione aldol reaction to establish the C5 stereogenic center and an N-propionylprolinol-mediated asymmetric alkylation reaction to set the C2 stereogenic center. The synthesis starts with N-acetyl thiazolidinethione and involves reagents such as titanium tetrachloride, acetaldehyde, TBSCl, and (S)-prolinol propionamide. The final product, (2R,5S)-2-methyl-5-hexanolide, was obtained with 98% enantiometric purity. The study concludes that this method provides an effective procedure for the stereoselective synthesis of the sex pheromone from easily available starting materials, and the methodology has potential applications in the synthesis of other biologically active compounds.
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