1) chiral crown ethers
旋光性冠醚
2) chiral crown ethers
手性冠醚
1.
Chiral phase transfer catalysts such as chiral quarternary ammonium salts,chiral crown ethers and their recent advances in the applications in asymmetric catalytic reactions including the alkylation,Michael addition,aldol reaction,Mannich reaction,oxidation and reduction are reviewed in this paper.
综述了手性季铵盐、手性冠醚以及其它新型手性相转移催化剂的制备及其在各种不对称相转移催化反应如烷基化反应、Michael加成反应、Aldol反应、Mannich反应、氧化反应及还原反应中应用的最新进展。
3) chiral crown ether
手性冠醚
1.
Sulfonated-β-cyclodextrins and chiral crown ether as chiral additives in capillary electrophoresis.;
磺化-β-环糊精及手性冠醚在毛细管电泳手性拆分中的应用
2.
A high performance liquid chromatographic(HPLC) separation of tryptophan(Trp) enantiomers was successfully realized by using chiral crown ether [Crownpak CR(+)] as the immobile phase and aqueous perchloric acid solution mixed with methanol as the mobile phase.
采用高效液相色谱法,以手性冠醚Crownpak CR(+)为固定相、高氯酸溶液/甲醇混合溶液为流动相,成功地实现了色氨酸(Trp)对映体的色谱分离。
3.
In this paper,a detail review is given on the recent progress in chiral crown ether biomimetic chemistry.
综述了部分开链配体的络合行为 ,对手性冠醚的合成、分子识别及仿生功能的研究进行了评述 。
4) water-soluble crown ether
水溶性冠醚
5) silica gel bound crown
冠醚改性硅胶
1.
This review deals with the progress in the studies of silica gel bound crown for extraction and separation of metal ions.
综述了冠醚改性硅胶萃取分离金属离子的研究进展 ,对其制备、应用等也进行了详细的介绍 。
6) chiral azacrown ether
手性氮杂冠醚
1.
Four chiral azacrown ethers were synthesized from rosin: N-dehyroabietyl monoaza-12-crown-4,N-dehyroabietyl monoaza-15-crown-5,N-dehyroabietyl monoaza-18-crown-6 and N-degrading-dehyroabietyl monoaza-12-crown-4,which were employed as phase-transfer catalysts in asymmetric Michael addition of 2-nitropropane to chalcone,affording the corresponding Michael addition products up to 35% ee.
以松香为原料,合成了4个手性氮杂冠醚:N-脱氢松香基单氮杂-12-冠-4、N-脱氢松香基单氮杂-15-冠-5、N-脱氢松香基单氮杂-18-冠-6和N-降解脱氢松香基单氮杂-12-冠-4,并用于催化不对称查尔酮Michael加成反应,发现这些手性氮杂冠醚可以有效地催化2-硝基丙烷与查尔酮的不对称Michael加成,Michael加成产物ee最高达35%。
补充资料：旋光性冠醚
分子式：
CAS号：
性质：又称旋光性冠醚（optically active crown ethers）指可拆分为光学异构体的冠醚。手性冠醚除具有冠醚的一般性质外，主要用于立体化学反应的研究。
CAS号：
性质：又称旋光性冠醚（optically active crown ethers）指可拆分为光学异构体的冠醚。手性冠醚除具有冠醚的一般性质外，主要用于立体化学反应的研究。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条