Abstract:The PdCl(2)-promoted reactions of methylenecyclopropanes (MCPs) 1 bearing diaryl substituents on the terminal double bond were carefully investigated. The solvents employed significantly affected the reaction outcomes. It was found that dimeric allylpalladium(ii) complexes 2a-2f can be obtained as the sole products in acceptable to good yields under mild reaction conditions with THF as the solvent, while dimeric allylpalladium(ii) complexes 2a-2f along with another type of dimeric allylpalladium(ii) complexes … Show more
“…They observed that isopropylidenecyclopropane did not form complexes and undergo the chloropalladation reaction, while unsubstituted MCPs did. In contrast, Shi et al reported that (1′,1′-diarylmethylene)cyclopropanes undergo the chloropalladation reaction, and they recently isolated complexes 716 by treatment of ACPs 619 with stoichiometric amounts of PdCl 2 or PdBr 2 (Scheme ) …”
“…They observed that isopropylidenecyclopropane did not form complexes and undergo the chloropalladation reaction, while unsubstituted MCPs did. In contrast, Shi et al reported that (1′,1′-diarylmethylene)cyclopropanes undergo the chloropalladation reaction, and they recently isolated complexes 716 by treatment of ACPs 619 with stoichiometric amounts of PdCl 2 or PdBr 2 (Scheme ) …”
A dinuclear Pd–Sn bonded complex is reported, in which the interaction of the formally tin(II)‐based ligand, [2‐MeBrSnC6F4AsPh2]–, with palladium appears to be best described as PdI–SnIII or Pd0–SnIV.
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