biostudies-literatureMai JDeutsche Forschungsgemeinschafte202212463https://www.ebi.ac.uk/biostudies/studies/S-EPMC10107259biostudies-literatureUnknown62(3)Complex [(DIPeP BDI)Ca]2 (C6 H6 ), with a C6 H6 2- dianion bridging two Ca2+ ions, reacts with benzene to yield [(DIPeP BDI)Ca]2 (biphenyl) with a bridging biphenyl2- dianion (DIPeP BDI=HC[C(Me)N-DIPeP]2 ; DIPeP=2,6-CH(Et)2 -phenyl). The biphenyl complex was also prepared by reacting [(DIPeP BDI)Ca]2 (C6 H6 ) with biphenyl or by reduction of [(DIPeP BDI)CaI]2 with KC8 in presence of biphenyl. Benzene-benzene coupling was also observed when the deep purple product of ball-milling [(DIPP BDI)CaI(THF)]2 with K/KI was extracted with benzene (DIPAngewandte Chemie (International ed. in English)Alkaline-Earth Metal Mediated Benzene-to-Biphenyl Coupling.PMC10107259HA 3218/11-1Langer JRosch BHarder SMorasch MMai JJedrzkiewicz DfalseAlkaline-Earth Metal Mediated Benzene-to-Biphenyl Coupling.Complex [(DIPeP BDI)Ca]2 (C6 H6 ), with a C6 H6 2- dianion bridging two Ca2+ ions, reacts with benzene to yield [(DIPeP BDI)Ca]2 (biphenyl) with a bridging biphenyl2- dianion (DIPeP BDI=HC[C(Me)N-DIPeP]2 ; DIPeP=2,6-CH(Et)2 -phenyl). The biphenyl complex was also prepared by reacting [(DIPeP BDI)Ca]2 (C6 H6 ) with biphenyl or by reduction of [(DIPeP BDI)CaI]2 with KC8 in presence of biphenyl. Benzene-benzene coupling was also observed when the deep purple product of ball-milling [(DIPP BDI)CaI(THF)]2 with K/KI was extracted with benzene (DIP2023-01-01T00:00:00Z2023 Jan2025-04-18T14:25:47.05Z2025-04-07T00:35:03.079ZS-EPMC101072593642659710.1002/anie.202212463