Abstract
A regioselective transition metal-catalyzed cycloisomerization reaction of boron-containing alkynyl epoxides toward C2- and C3-borylated furans has been developed. It was found that the copper catalyst as well as the gold catalyst with more basic triflate counterion favor boryl migration toward C3-borylated furans, whereas employment of the cationic gold hexafluoroantimonate affords C2-borylated furan via a formal 1,2-hydrogen shift.
Original language | English (US) |
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Pages (from-to) | 13146-13149 |
Number of pages | 4 |
Journal | Journal of the American Chemical Society |
Volume | 136 |
Issue number | 38 |
DOIs | |
State | Published - Sep 24 2014 |
Externally published | Yes |
ASJC Scopus subject areas
- Catalysis
- General Chemistry
- Biochemistry
- Colloid and Surface Chemistry