Catalytic asymmetric formation of beta-sultams.
Marian Zajac, René Peters
Index: Org. Lett. 9 , 2007, (2007)
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Abstract
beta-Sultams, highly strained sulfonyl analogues of beta-lactams, were prepared enantio- and diastereoselectively by tertiary amine catalyzed [2 + 2] cycloaddition reactions. The title compounds are practical precursors of highly enantioenriched biologically interesting beta-aminosulfonyl derivatives.
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