Triorganoindium compounds

TrIORGANOINDIUM COMPOUNDS AS EFFICIENT REAGENTS FOR PALLADIUM-CATALYSED CROSSCOUPLING REACTIONS WITH ARYL AND VINYL ELECTROPHILES... 

Table 7.2 Cross-coupling reactions between triorganoindium compounds and aryl and vinyl electrophiles.

The presence of the alkali metal salts causes no problem in isolating the final product. Eisch has reported that the addition of KCl in the reaction of InCls and EtsAl will increase the yield of Etsin [8]. The KCl forms complexes with Et2lnCl and excess EtsAl but not with Etsin, allowing for a much more convenient separation of the desired trialkyl indium compounds. We also have found that under our reaction conditions, the alkali metal salts do not form complexes with the organoindium compounds. As the alkali metal salts are very insoluble in xylene while the desired triorganoindium compounds are soluble, they can be separated from each other by simple filtration of the reaction mixture. 

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