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A chiral bis(guanidino)iminophosphorane catalyzes enantioselective addition reactions of a 1,3‐dithiane derivative as a pronucleophile. The chiral uncharged organosuperbase facilitates the addition of benzyloxycarbonyl‐1,3‐dithiane to aromatic N‐Boc‐protected imines to provide optically active α‐amino‐1,3‐dithiane derivatives, which are valuable versatile building blocks in organic synthesis.
Ein chirales Bis(guanidino)iminophosphoran katalysiert enantioselektive Additionsreaktionen eines als Pränukleophil agierenden 1,3‐Dithian‐Derivats, das ein wenig acides Proton aufweist. Wie M. Terada et al. in ihrer Zuschrift auf S. 16062 ff. zeigen, erleichtert die chirale ungeladene Organosuperbase die Addition von Benzylcarbonyl‐1,3‐dithian an aromatische N‐Boc‐geschützte Imine, um optisch aktive...
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