Palladium-Catalyzed Enantioselective Diboration of Prochiral Allenes
β Scribed by Pelz, Nicholas F.; Woodward, Angela R.; Burks, Heather E.; Sieber, Joshua D.; Morken, James P.
- Book ID
- 127021842
- Publisher
- American Chemical Society
- Year
- 2004
- Tongue
- English
- Weight
- 41 KB
- Volume
- 126
- Category
- Article
- ISSN
- 0002-7863
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π SIMILAR VOLUMES
Addition of bis(pinacolato)diboroon [(Me,C,O,)B-B(O,C#e,)] to various allenes was carried out in excellent yields in the presence of Pt(PPh,), at 80 T or Pt(dba)J(c-Hex)g at 50 "c. The addition to internal double bond was predominant for monosubstituted allenes, whereas the terminal diboration produ
Substituted allenes are selectively obtained in good yields from the reaction of Grignard reagents with propargylic or allenic halides in the presence of catalytic amounts of palladium chloride, triphenylphosphine and diisobutyl aluminum hydride, in