✦ LIBER ✦

Catalytic asymmetric hydrosilylation of butadiynes: A new synthesis of optically active allenes

✍ Scribed by Annegret Tillack; Dirk Michalik; Cornelia Koy; Manfred Michalik

Book ID: 104262185
Publisher: Elsevier Science
Year: 1999
Tongue: French
Weight: 120 KB
Volume: 40
Category: Article
ISSN: 0040-4039
DOI: 10.1016/s0040-4039(99)01403-3

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✦ Synopsis

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).

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