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Asymmetric Palladium-Catalyzed Annulation of Benzene-1,2-diols and Propargylic Carbonates.

โœ Scribed by Jean-Robert Labrosse; Paul Lhoste; Denis Sinou

Publisher
John Wiley and Sons
Year
2010
Weight
32 KB
Volume
33
Category
Article
ISSN
0931-7597

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Asymmetric Palladium-Catalyzed Annulatio
Asymmetric Palladium-Catalyzed Annulation of Benzene-1,2-diols and Propargylic Carbonates
โœ Jean-Robert Labrosse; Paul Lhoste; Denis Sinou ๐Ÿ“‚ Article ๐Ÿ“… 2002 ๐Ÿ› John Wiley and Sons ๐ŸŒ English โš– 114 KB ๐Ÿ‘ 1 views

The reaction of benzene-1,2-diol with various propargylic carbonates in the presence of a palladium catalyst and various chiral ligands afforded the corresponding 2-alkylidene-3-alkyl-2,3-dihydrobenzodioxins in quite good yields and enantioselectivities of up to 97%. The highest enantiomeric ex- [a]