Subscribe to RSS
Please copy the URL and add it into your RSS Feed Reader.
https://www.thieme-connect.de/rss/thieme/en/10.1055-s-00000084.xml
Synthesis 2010(15): 2621-2625
DOI: 10.1055/s-0029-1218848
DOI: 10.1055/s-0029-1218848
PAPER
© Georg Thieme Verlag
Stuttgart ˙ New York
Tandem Suzuki-Miyaura Cross-Coupling/Dehydrobromination of 1,1-Dibromoalkenes to Alkynes with a Cyclobutene-1,2-diylbis(imidazolium) Salt as Catalyst Precursor
Further Information
Publication History
Received
17 February 2010
Publication Date:
25 June 2010 (online)


Abstract
A cyclobutene-1,2-bis(imidazolium) salt proved to be an efficient catalyst precursor for one-pot tandem Suzuki-Miyaura/dehydrobromination reactions for the synthesis of alkynes starting from 1,1-dibromoalkenes and palladium(II) acetate, aryl boronic acids, and potassium tert-butoxide in toluene. Starting materials were prepared from aldehydes under Corey-Fuchs conditions.
Key words
imidazol-2-ylidene - N-heterocyclic carbene - biscarbene complex - Corey-Fuchs reaction