Chemistry letters

Zirconium Catalyzed or Mediated Regioselective CC Bond Formation Reactions of. ALPHA.,. BETA.-Unsaturated Acetals.

T Takahashi, DY Kondakov, N Suzuki

文献索引：Takahashi, Tamotsu; Kondakov, Denis Y.; Suzuki, Noriyuki Chemistry Letters, 1994 , # 2 p. 259 - 262

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被引用次数: 20

摘要

Zirconium-alkyne complexes or zirconacyclopentenes, which were easily prepared in situ from alkynes, reacted with acrolein diethylacetal to afford vinyl ether derivatives. The C–C bond formation proceeded exclusively at β-position of the α, β-unsaturated acetal. Zirconium catalyzed C–C bond formation reactions of α, β-unsaturated acetals with EtMgBr also proceeded at β-position exclusively.