We used 1,1,6,6-tetraphenylhexa-2,4-diyne-1,6-diol（A） as the host molecule to selectively recognize the component 1,8-cineole（B） in the volatile oil of Flos Magnoliae（Xin Yi）. The inclusion compound（A+B） was f...We used 1,1,6,6-tetraphenylhexa-2,4-diyne-1,6-diol（A） as the host molecule to selectively recognize the component 1,8-cineole（B） in the volatile oil of Flos Magnoliae（Xin Yi）. The inclusion compound（A+B） was formed as crystalline, and the structure was confirmed by means of IR, （（）1H NMR）, and single crystal X-ray diffraction, with the 1∶2 molar ratios of the host to the guest. The component 1,8-cineole（B） was selectively isolated from the inclusion compound（A+B） by Kugelrohr vaccum technology, and then further characterized by IR, （）1H NMR and （）13C NMR. The whole components in the volatile oil of Flos Magnoliae（Xin Yi） and the isolation effect of 1,8-cineole isolated from inclusion crystals were analyzed by GC and GC-MS, respectively. The result indicate that the good isolation effect is given by the inclusion method, with purity and yield of the component 1,8-cineole（B） separated from the volatile oil of Flos Magnoliae are 100% and 85%, respectively.展开更多
An efficient divergent synthesis of substituted 1,8-naphthyridine and hydropyridopyrimidinone derivatives was developed by the reactions of o-aminocyanopyridines and ketones based on different catalytic conditions.
Imidazol-1-yl-acetic acid is introduced as a new, efficient and recyclable green bifunctional organocatalyst for the synthesis of 1,8-dioxooctahydroxanthenes under solvent-free conditions. This catalyst is water solub...Imidazol-1-yl-acetic acid is introduced as a new, efficient and recyclable green bifunctional organocatalyst for the synthesis of 1,8-dioxooctahydroxanthenes under solvent-free conditions. This catalyst is water soluble and can be separated from the products by simple filtration. The filtrate can be evaporated to dryness and recrystallized from cool methanol to give the recovered catalyst. This organocatalyst was used for the synthesis of 1,8-dioxooctahydroxanthenes under solvent-flee conditions and recycled up to 8 consecutive runs without any losing of its efficiency.展开更多
文摘We used 1,1,6,6-tetraphenylhexa-2,4-diyne-1,6-diol（A） as the host molecule to selectively recognize the component 1,8-cineole（B） in the volatile oil of Flos Magnoliae（Xin Yi）. The inclusion compound（A+B） was formed as crystalline, and the structure was confirmed by means of IR, （（）1H NMR）, and single crystal X-ray diffraction, with the 1∶2 molar ratios of the host to the guest. The component 1,8-cineole（B） was selectively isolated from the inclusion compound（A+B） by Kugelrohr vaccum technology, and then further characterized by IR, （）1H NMR and （）13C NMR. The whole components in the volatile oil of Flos Magnoliae（Xin Yi） and the isolation effect of 1,8-cineole isolated from inclusion crystals were analyzed by GC and GC-MS, respectively. The result indicate that the good isolation effect is given by the inclusion method, with purity and yield of the component 1,8-cineole（B） separated from the volatile oil of Flos Magnoliae are 100% and 85%, respectively.
文摘An efficient divergent synthesis of substituted 1,8-naphthyridine and hydropyridopyrimidinone derivatives was developed by the reactions of o-aminocyanopyridines and ketones based on different catalytic conditions.
基金the Islamic Azad University,Sousangerd Branch and Yasouj University for the financial support
文摘Imidazol-1-yl-acetic acid is introduced as a new, efficient and recyclable green bifunctional organocatalyst for the synthesis of 1,8-dioxooctahydroxanthenes under solvent-free conditions. This catalyst is water soluble and can be separated from the products by simple filtration. The filtrate can be evaporated to dryness and recrystallized from cool methanol to give the recovered catalyst. This organocatalyst was used for the synthesis of 1,8-dioxooctahydroxanthenes under solvent-flee conditions and recycled up to 8 consecutive runs without any losing of its efficiency.
