Direct Synthesis of Alkynylstannanes: ZnBr2 Catalyst for the Reaction of Tributyltin Methoxide and Terminal Alkynes

Direct Synthesis of Alkynylstannanes: ZnBr2 Catalyst for the Reaction of Tributyltin Methoxide and Terminal Alkynes

Metal hopping: Various alkynylstannanes were synthesized by the direct reaction of Bu3SnOMe with terminal alkynes at room temperature in the presence of a ZnBr2 catalyst. Rather than acting as a Lewis acid, ZnBr2 was transmetalated with Bu3SnOMe to give Zn(OMe)2, which is key to the catalytic reacti...

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Veröffentlicht in:Angewandte Chemie International Edition 2011-10, Vol.50 (44), p.10393-10396
Hauptverfasser: Kiyokawa, Kensuke, Tachikake, Nodoka, Yasuda, Makoto, Baba, Akio
Format: Artikel
Sprache:eng
Schlagworte:
alkynes
Alkynes - chemistry
Bromides - chemistry
Catalysis
homogeneous catalysis
Methanol - chemistry
stannanes
tin
Tin Compounds - chemistry
Trialkyltin Compounds - chemistry
zinc
Zinc Compounds - chemistry
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Zusammenfassung:Metal hopping: Various alkynylstannanes were synthesized by the direct reaction of Bu3SnOMe with terminal alkynes at room temperature in the presence of a ZnBr2 catalyst. Rather than acting as a Lewis acid, ZnBr2 was transmetalated with Bu3SnOMe to give Zn(OMe)2, which is key to the catalytic reaction.
ISSN:1433-7851
1521-3773
DOI:10.1002/anie.201104208