A 1:1 mixture of the palladium phenanthroline complex (phen)Pd(Me)Cl and NaBAr 4 (phen = 1,10-phenanthroline; Ar = 3,5-C 6 H 3 (CF 3 ) 2 ) catalyzed the reaction of 4,4-disubstituted 1,6-dienes with trialkylgermanes at 80 °C in 1,2-dichloroethane (DCE) to form R 3 GeCH 2 -substituted cyclopentanes in good yield with high trans selectivity.
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Widenhoefer et al. (1999) studied this question.
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