| 摘要 |
<p>A polyvalent vinyl aromatic compound represented by the following chemical formula 4 is produced by reacting (1) a specific vinyl aromatic compound and (2) a specific vinyl compound in the presence of (3-1) a metal complex and (3-2) a compound in the class of percarboxylic acids or a hypervalent iodine compound so that a vinyl group derived from the vinyl compound is introduced onto a carbon atom that is adjacent to the carbon atom to which a vinyl group is bonded in the vinyl aromatic compound:
wherein Ar is a monocyclic aromatic hydrocarbon group or a ring-cumulated hydrocarbon group formed by the linkage of a plurality of the aromatic hydrocarbon groups via a single bond or an unsaturated bond, has a vinyl group on a carbon atom, and may have a substituent on a carbon atom that is not adjacent to the carbon atom having the vinyl group; R 1a is a group represented by -CH 2 OC(=O)R 4 (wherein R 4 is an alkyl group having 1 to 20 carbon atoms), an alkyl group having 1 to 20 carbon atoms, either a monocyclic aromatic hydrocarbon group which may have a substituent or a ring-cumulated hydrocarbon group which may have a substituent and which is formed by the linkage of a plurality of the aromatic hydrocarbon groups via a single bond or an unsaturated bond, a trialkylsilyl group, a hydrogen atom, or -CH 2 OC(=O)R 6 wherein R 6 is an alkyl group having 1 to 5 carbon atoms, a phenyl group, or a phenyl group having, as a substituent, an alkyl group having 1 to 5 carbon atoms; R 2 is a hydrogen atom or an alkyl group having 1 to 5 carbon atoms; R 3 is a hydrogen atom or an alkyl group having 1 to 20 carbon atoms; and n is an integer of 1 to m, provided that when Ar is a monocyclic aromatic hydrocarbon group, m is a number obtained by subtracting 1 from the number of the carbon atoms that constitute the aromatic ring represented by Ar or, when Ar is a ring-cumulated hydrocarbon group, m is a number obtained by subtracting 1 from the number of the carbon atoms that are not involved in a single bond or an unsaturated bond among the carbon atoms that constitute the aromatic ring.</p> |
