ID | 1414 |
FullText File | |
Title Alternative | On the Substituent-induced Chemical Shifts of the Side Chain Carbons in the para-Substituted Propylbenzenes, 2-Methylpropylbenzenes, and 2, 2-Dimethylpropylbenzenes
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Authors |
Kusuyama, Yoshiaki
Fukunaga, Megumi
Kamatani, Misako
Arimoto, Kayo
Hashimoto, Rina
Yukawa, Shinako
Morioka, Hidehito
Yamabata, Shinji
Teragishi, Etsu
Takiguchi, Mieko
Inoue, Yasue
Amatu, Kazumi
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Self DOI | |
Journal Title |
Bulletin of the Faculty of Education, Wakayama University. Natural science
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ISSN | 13424645
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NCID | AN00257977
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Volume | 54
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Start Page | 17
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End Page | 22
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Order | 04
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Published Date | 2004-02-27
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Language |
eng
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Abstract | 標記の化合物の炭素-1 3核磁気共鳴スペクトルを測定し、側鎖炭素の化学シフト(SCS)を決定した。A, Bの2-位の炭素は置換基電子効果の解釈では逆の方向性を示し、Aにおいて顕著であった。他方Cの2-位の炭素は正の方向性を示した。A, BにおけるC_2の置換基効果は2位の炭素-水素結合の分極により生じたものである。
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Abstract Alternative | The substituent-induced chemical shifts (SCS) for the side chain carbons in a number of the para substituted propylbenzenes (A), 2-methylpropylbenzenes (B), and 2, 2-dimethylpropylbenzenes (C) were determined. The SCS of C_2 (β-position to the ring) of A showed clearly an inverse trend in the sense of the substituent electronic effect as good as SCS (^<13>CH_3) of p-substituted ethylbenzenes. SCS (C_2) of B for electron attracting groups by resonance exhibited also an inverse trend while the magnitudes were very small. SCS (C_2) of C showed a normal trend. It was confirmed that the most important factor for the inversed SCS for SCS (C_2) for the ethylbenzenes, A, and B was the polarization of the C_2-H bond induced by the substituted phenyl moiety.
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Content Type |
Departmental Bulletin Paper
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Text Version |
publisher
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Accession No. | KJ00004258254
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