A Facile and Practical Synthetic Route to 1,1′-Bis(<i>o</i>-carborane)

2008-10-13T00:00:00Z (GMT) by Shikuo Ren Zuowei Xie
Reaction of dilithiocarborane (1,2-Li<sub>2</sub>C<sub>2</sub>B<sub>10</sub>H<sub>10</sub>) with CuCl in toluene affords a single product, 1,1′:2,2′-[Cu(toluene)]<sub>2</sub>(C<sub>2</sub>B<sub>10</sub>H<sub>10</sub>)<sub>2</sub>, which gives 1,1′-bis(<i>o</i>-carborane) after hydrolysis. This serves as the most efficient method for the preparation of 1,1′-bis(<i>o</i>-carborane).