| 摘要 |
PROBLEM TO BE SOLVED: To provide an initiator having a chemical shift value largely different from a chemical shift value of proton absorption originated from a polymer by measurement using a nucleomagnetic resonance and a polymer of which the molecular weight is easily calculated. SOLUTION: The initiator is a compound expressed by general formula (1), wherein R<SB>1</SB>and R<SB>2</SB>express H or an alkyl; X<SB>1</SB>expresses a halogen; Y<SB>1</SB>expresses H, nitro, cyano, OH, an amino, an alkyl, an aryl or the like; m expresses 0-3 integer; n expresses an integer including 0. COPYRIGHT: (C)2006,JPO&NCIPI
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