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Substrate-induced covalent assembly of a chemzyme and crystallographic characterization of a chemzyme-substrate complex.
A substrate induced covalent assembly of a highly organized chemzyme known to be effective in both catalytic asymmetric aziridination and aza Diels-Alder reactions is described and the informationExpand
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Regulation of orthogonal functions in a dual catalyst system. Subservient role of a nonchiral Lewis acid in an asymmetric catalytic heteroatom Diels-Alder reaction.
A catalytic asymmetric heteroatom Diels−Alder reaction of unactivated imines with Danishefsky's diene is described which gives high asymmetric induction for N-benzhydryl imines derived from a varietyExpand
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Evidence for a boroxinate based Brønsted acid derivative of VAPOL as the active catalyst in the catalytic asymmetric aziridination reaction.
Studies are described that were designed to determine the structure of the active catalyst in the asymmetric catalytic aziridination of imines with ethyl diazoacetate (AZ reaction). Evidence suggestsExpand
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Simultaneous synthesis of both rings of chromenes via a benzannulation/o-quinone methide formation/electrocyclization cascade.
A new route to the chromene ring system has been developed which involves the reaction of an α,β-unsaturated Fischer carbene complex of chromium with a propargyl ether bearing an alkenyl group on theExpand
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Vaulted Biaryls: Efficient Ligands for the Aluminum-Catalyzed Asymmetric Baeyer-Villiger Reaction
Vaulted biaryls (VANOL and VAPOL) have been ap- plied in the aluminum-catalyzed asymmetric Baeyer-Villiger reaction of prochiral 3-substituted cyclobutanones. Optically active g-butyrolactones areExpand
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Traceless stereoinduction in the one-pot assembly of all three rings of hexahydrodibenzopyrans.
A one-pot method has been developed for the synthesis of all three rings of the hexahydrodibenzopyran ring system. This process involves a tandem sequence consisting of a benzannulation reaction ofExpand
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