Aziridines Ring Opening by Silyl Chalcogenides: a Stereoselective Access to Polyfunctionalized Molecules as Precursor of Sulfurated and Selenated Heterocycles
摘要:
Aziridines react efficiently with bis(trimethyl)silyl-sulfide and -selenide to afford a direct access to -amino thiols and selenols. Synthesis of 2,4-disubstituted 1,3-selenazolidines is obtained through reaction of 1,2-amino selenols with aldehydes.
Bis(trimethylsilyl)selenide (HMDSS) acts as an efficient reagent in the TBAF catalyzedreaction with different substituted epoxides, episulfides, and aziridines, leading to β -functionalized diselenides in a highly regio- and stereoselective way. When using α -bromo alkyl ethers as trapping agent, 1,3-oxaselenolanes and 1,3-thiaselenolanes can be isolated, while 1,3-selenazolidines could be obtained