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Inside Cover Highly Enantioselective Alkylation of Aldehydes with 1 3-Benzodithiolylium Tetrafluoroborate A Formal Organocatalytic Alkylation of Aldehydes by the Carbenium Ion (Angew. Chem. Int. Ed

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An
organocatalytic …
… highly stereoselective addition of benzodithiolylium tetrafluoroborate to aldehydes
tolerates a large range of functional groups. As P. G. Cozzi and co-workers report in the
Communication on page 7842 ff., the reaction occurs through the formation of a key
enamine intermediate in the presence of the MacMillan catalyst. The stability of the
carbenium ion and the high nucleophilicity of the enamine, illustrated by their presumed
value on the Mayr scale, enable the reaction to take place even in the presence of water.
Inside Cover
Andrea Gualandi, Enrico Emer, Montse Guiteras Capdevila, and
Pier Giorgio Cozzi*
An organocatalytic highly stereoselective addition of benzodithiolylium
tetrafluoroborate to aldehydes tolerates a large range of functional groups. As P. G.
Cozzi and co-workers report in the Communication on page 7842 ff., the reaction
occurs through the formation of a key enamine intermediate in the presence of the
MacMillan catalyst. The stability of the carbenium ion and the high nucleophilicity of
the enamine, illustrated by their presumed value on the Mayr scale, enable the
reaction to take place even in the presence of water.
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forma, ion, alkylation, enantioselectivity, benzodithiolylium, aldehyde, int, carbenium, cover, angel, chem, organocatalytic, insider, tetrafluoroborate, highly
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