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ChemInform Abstract: Catalytic Asymmetric Synthesis of Optically Active Allenes from Terminal Alkynes.

โœ Scribed by Shengming Ma; et al. et al.

Book ID
112045890
Publisher
John Wiley and Sons
Year
2012
Weight
34 KB
Volume
43
Category
Article
ISSN
0931-7597

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๐Ÿ“œ SIMILAR VOLUMES

Catalytic asymmetric hydrosilylation of
Catalytic asymmetric hydrosilylation of butadiynes: A new synthesis of optically active allenes
โœ Annegret Tillack; Dirk Michalik; Cornelia Koy; Manfred Michalik ๐Ÿ“‚ Article ๐Ÿ“… 1999 ๐Ÿ› Elsevier Science ๐ŸŒ French โš– 120 KB

The Rh-catalyzed hydrosilylation of butadiynes to chiral allenes in the presence of chiral phosphine ligands is d~scribed. For the first time an enantiomeric excess of 22% was achieved using PPM ligand ((2S,4S)-(-)-4-(diphenylphosphino)-2-(diphenylphosphinomethyl)-pyrrolidine).