Effect of Counter Anions on the Lewis Acidity of Lithium Ion in Trityl Cation Formation
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- Ikeda Shin-ya
- Interdisciplinary Graduate School of Engineering Sciences Kyushu University
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- Kobayashi Hiroshi
- Institute of Advanced Material Study Kyushu University
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- Sonoda Takaaki
- Institute of Advanced Material Study Kyushu University
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- Nie Jin
- Interdisciplinary Graduate School of Engineering Sciences Kyushu University
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- Sonoda Akinari
- Interdisciplinary Graduate School of Engineering Sciences Kyushu University
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- Yagupolskii Yurii A.
- National Academy of Science of Ukraine
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- Mori Akira
- Institute of Advanced Material Study Kyushu University
Bibliographic Information
- Other Title
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- トリチルカチオン生成反応に及ぼすリチウムイオンの求電子反応性の定量化
- トリチル カチオン セイセイ ハンノウ ニ オヨボス リチウム イオン ノ キュウデンシ ハンノウセイ ノ テイリョウカ
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Abstract
A trityl cation was generated from the reactions of trityl chloride and trityl alcohol with alkaline salt catalysts in weakly coordinating dichloromethane. The generated trityl cation was monitored by UV spectra. In the case of trityl chloride, the catalytic activities were not so different among alkaline salt catalysts such as H_3OTFPB, LiTFPB, NaTPFPB, NaTFPB, and others. These results indicated that anhydrous Li and Na salts have comparable activities to H_3OTFPB in the formation of trityl cation from trityl chloride. On the other hand, the amount of trityl cation generated from trityl alcohol by LiTFPB is one fourteenth as much as the amount generated by H_3OTFPB. This is due to the stronger affinity of Li^+ to alcohols than to chlorides. Furthermore, hydrated alkaline salts have a lower catalytic activity than anhydrous ones because the water decreases the Lewis acidity of Li^+.
Journal
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- 九州大学機能物質科学研究所報告
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九州大学機能物質科学研究所報告 15 (2), 169-175, 2001-12-14
Institute of Advanced Material Study Kyushu University
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Details 詳細情報について
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- CRID
- 1390572174789787008
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- NII Article ID
- 110006177594
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- NII Book ID
- AN10060378
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- ISSN
- 09143793
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- DOI
- 10.15017/7946
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- HANDLE
- 2324/7946
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- NDL BIB ID
- 6065798
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- Text Lang
- ja
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- Data Source
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- JaLC
- IRDB
- NDL
- CiNii Articles
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- Abstract License Flag
- Allowed