Synthese, Reaktivität und Ligandeigenschaften von 1,4‐Dihydro‐1,4‐diboranaphthalin‐ und 2,3‐Benzo‐1,4‐dihydro‐1,4‐diborafulven‐Derivaten

Synthesis, Reactivity, and Ligand Properties of 1,4‐Dihydro‐1,4‐diboranaphthalene and 2,3‐Benzo‐1,4‐dihydro‐1,4‐diborafulvene Derivatives The chlorine derivative 1a of 1,4‐dihydro‐1,4‐diboranaphthalene and 2a of 2,3‐benzo‐1,4‐dihydro‐1,4‐diborafulvene are obtained by treating 1,2‐bis(trimethylstannyl)benzene ( 3 )with (EtCBCl 2 ) 2 ( 4 ) and 1,2‐bis(dichloroboryl)benzene ( 5 ) with 1,1‐bis(trimethylstannyl)‐2‐methyl‐1‐propene ( 6 ), respectively. The dimethyl derivatives 1b and 2b react with the Fe(CO) 3 complex fragment to yield the iron complexes 7b and 8b , in which the iron is bound to the heterocycle of 1b and 2b , respectively. The X‐ray structure analyses of 7b , 8b , and 2b are described.