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Synthesis of Large-ring Cycloalkanediones from Bis-Grignard Reagent and Dinitriles
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作者 BingQinYANG JuLiJIANG +2 位作者 YinJuanBAI JunLU ZhenSHI 《Chinese Chemical Letters》 SCIE CAS CSCD 2004年第1期5-6,共2页
Cyclododecanedione and 1, 8-cyclotetradecanedione were prepared from bis-Grig- nard reagent and dinitriles. This is a convenient synthetic method for large-ring cycloalkanediones.
关键词 Large-ring cycloalkanediones dinitrileS bis-Grignard reagent synthesis.
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Synthesis of O6-Corona[3]arene[3]pyridazines and Their Molecular Recognition Property in Organic and Aqueous Media 被引量:1
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作者 Yao Lu Dong-Dong Liang +2 位作者 Zhan-Da Fu Qing-Hui Guo Mei-Xiang Wang 《Chinese Journal of Chemistry》 SCIE CAS CSCD 2018年第7期630-634,共5页
O6-Corona[3]arene[3]pyridazines were synthesized from the one-pot macrocyclic condensation reaction of 3,6-dichlorotetrazine with 1,4-dihydroquinone derivatives followed by the inverse electron demand Diels-Alder reac... O6-Corona[3]arene[3]pyridazines were synthesized from the one-pot macrocyclic condensation reaction of 3,6-dichlorotetrazine with 1,4-dihydroquinone derivatives followed by the inverse electron demand Diels-Alder reaction of the tetrazine rings with a cyclopentanone-derived enamine. Conversion of six ester groups within macrocycle into all sodium acetate moieties afforded a water soluble O6-corona[3]arene[3]pyridazine. The coronary macrocycle host formed complexes selectively with organic ammoniums and dinitrile guests in a 1 : 1 stoichiometric ratio in organic solvents with association constants ranging from (2.96± 0.10)× 10^1 to (2.53±0.33)× 10^5 L·mol^-1. Water soluble O6-corona[3]arene[3]pyridazine was also able to complex strongly with organic ammoniums in water to give an association constant up to (2.67 ± 0.21) × 10^4 L·mol^-1. The pseudo-rotaxane and inclusion structures of the host-guest complexes were revealed by the X-ray crystallography. 展开更多
关键词 coronarene arene[3]pyridazine inverse electron demand Diels-Alder reaction molecular recognition organic ammonium dinitrile
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Unprecedented synthesis of chiral calix[4](aza)crowns and its potent encapsulating methanol
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作者 ZhengYi Li MingYu Teng +3 位作者 JieJie Ma Ji Huang LeYong Wang Yi Pan 《Science China Chemistry》 SCIE EI CAS 2009年第4期497-504,共8页
Unprecedented synthesis of chiral (aza)crown ethers of calix[4]arene derivatives bearing a carboxyl amide bridge was described. The synthesis proceeds through condensation of the corresponding dinitriles with opticall... Unprecedented synthesis of chiral (aza)crown ethers of calix[4]arene derivatives bearing a carboxyl amide bridge was described. The synthesis proceeds through condensation of the corresponding dinitriles with optically active 1,2-aminoalcohols, and is catalyzed by the ZnCl<SUB>2</SUB> Lewis acid at elevated temperature in a very efficient one-pot process. The cavity of calix[4](aza)crowns can encapsulate methanol molecules by O-H&#8943;&#1087; interaction, which has been confirmed by X-ray crystal structures and ESI-MS. 展开更多
关键词 CHIRAL (aza)crown dinitrile 1 2-aminoalcohol X-ray crystal structure inclusion complex
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