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Carbohydrate nitroalkenes chiral, cycloaddition

Asymmetric tandem cycloaddition of a chiral carbohydrate nitroalkene with ethyl vinyl ether in the presence of electron-withdrawing alkenes produces a facile assembly of bicyclic systems, which can further be selectively cleaved to give homologated carbohydrates (Eq. 8.110).176... [Pg.284]

The asymmetric tandem cycloaddition of the chiral carbohydrate nitroalkene (35) with ethyl vinyl ether involves the initial formation of the nitronate (36) which reacts exclusively with electron-withdrawing alkenes by 3 -I- 2-cycloaddition to yield chiral bicycles (37) and (38) (Scheme 12). ... [Pg.460]

Borrachero et al. (180) prepared a number of sugar isoxazolidines by the reaction of carbohydrate-functionalized nitrones with nitroalkenes (Scheme 1.33). They found a matched pair of chiral sugar cycloaddition reaction partners to be... [Pg.27]

See other pages where Carbohydrate nitroalkenes chiral, cycloaddition is mentioned: [Pg.74]    [Pg.92]   
See also in sourсe #XX -- [ Pg.460 ]

See also in sourсe #XX -- [ Pg.460 ]

See also in sourсe #XX -- [ Pg.98 , Pg.460 ]



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Carbohydrate nitroalkenes

Carbohydrates chirality

Cycloadditions chiral

Nitroalkene

Nitroalkene 1 + 2]cycloaddition

Nitroalkene, cycloadditions

Nitroalkenes

Nitroalkenes, cycloaddition

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