Stereoselective Reactions. XXVII. Solution Structures of a Chiral Tridentate Lithium Amide in Relation to Enantioselective Deprotonation of 4-tert-Butylcyclohexanone.
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説明
^6Li- and 15N-NMR spectroscopic studies on the solution structures of a chiral tridentate lithium amide have revealed that it exists as a chelated monomer in which the lithium is tri-coordinated, as a chelated dimer in which the lithium is tetra-coordinated, or as a mixture of these two species depending upon the solvent used. It is concluded that lower Lewis acidity of the tri- and tetra-coordinated lithium compared to the di-coordinated lithium makes tridentate lithium amides inferior to dibentate lithium amides as bases in enantioselective deprotonation reaction.
収録刊行物
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- CHEMICAL & PHARMACEUTICAL BULLETIN
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CHEMICAL & PHARMACEUTICAL BULLETIN 45 (9), 1399-1402, 1997
公益社団法人 日本薬学会
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詳細情報 詳細情報について
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- CRID
- 1390282679135992448
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- NII論文ID
- 130003947364
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- COI
- 1:CAS:528:DyaK2sXmtl2qsb4%3D
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- ISSN
- 13475223
- 00092363
- http://id.crossref.org/issn/00092363
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- 本文言語コード
- en
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- データソース種別
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- JaLC
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- CiNii Articles
- OpenAIRE
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- 抄録ライセンスフラグ
- 使用不可