High yielding synthesis of carboranes under mild reaction conditions using a homogeneous silver(I) catalyst: direct evidence of a bimetallic intermediate.
Methods used to prepare functionalized carboranes generally require heating to high temperatures, and thus limits the range of derivatives which can be prepared directly from alkynes. We show here that by using a homogeneous silver(I) catalyst it is now possible to prepare carboranes in good to excellent yield at temperatures below 40 °C, including at room temperature. The process is general and provides an important new synthetic strategy for the preparation of functionalized boron clusters.
Department of Chemistry and Chemical Biology, McMaster University, 1280 Main St W., Hamilton, Ont., L8S 4M1 Canada; Department of Chemistry, Faculty of Science, Tanta University, 31527 Tanta (Egypt).
Mohamed E
ME
El-Zaria
Kunal
K
Keskar
Afaf R
AR
Genady
Joseph A
JA
Ioppolo
James
J
McNulty
John F
JF
Valliant
D001896:Boron Compounds / Q000138:chemical synthesis* / Q000737:chemistry; D002384:Catalysis; D066244:Proton Magnetic Resonance Spectroscopy; D012834:Silver / Q000737:chemistry*
D001896:Boron Compounds; D012834:Silver
alkynes; cluster compounds; homogeneous catalysis; silver; structure elucidation