Tetrahedron p. 4767 - 4772 (1992)
Update date:2022-09-26
Topics:
Bodor, Nicholas
Koltai, Ernoe
Prokai, Laszlo
Imidazolidino<1,2-d>dithiadiazepines are converted to the ten-membered saturated heterocycles via borohydride reduction in acidic media or using ''in situ'' generated borane.Reductive alkylation in acetic or propionic acid as a solvent represents a significant side reaction.Relatively stable boron compounds are identified as intermediates which yield the saturated heterocycles upon acidic hydrolysis. Key Words: Imidazolidino<1,2-d>dithiadiazepines; 1,2-dithia-5,8-diaza-cyclodecane; borohydride reduction; by-products; reaction mechanism
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