| abstract |
An object of the present invention is to find a novel compound having a dendritic (dendritic) polyphenylene structure, effective as a ligand, and having a useful catalytic action in various reactions. The following general formula (1) [Chemical 1] (In the formula, B represents a nitrogen atom or a phosphorus atom, and R 1 represents a hydrogen atom, an alkyl group which may have a substituent, an aryl group which may have a substituent, or 2 ′, 3 ′, 4 ', 5'-tetraphenylbiphenyl group (hereinafter referred to as TPBP), m represents an integer of 1 or 2, and when m is 1, R 2 may have a hydrogen atom or a substituent. A good alkyl group, an aryl group which may have a substituent, or TPBP, and when m is 2, R 2 represents a divalent hydrocarbon residue having 1 to 30 carbon atoms.) A 2 ′, 3 ′, 4 ′, 5′-tetraphenylbiphenyl compound represented by the formula: [Selection figure] None |