Introduction Although devices based on pseudorotaxanes, cantenanes, and rotaxanes are commercialized yet, several researches have been done on the applications of these donor-acceptor molecules. A promising area is t...Introduction Although devices based on pseudorotaxanes, cantenanes, and rotaxanes are commercialized yet, several researches have been done on the applications of these donor-acceptor molecules. A promising area is the field of nanotechnology. The miniaturization of semi-conductor technology by the ＂top-down＂ approach is limited by the wavelength of the radiation used in the lithography to prepare electronic components. Therefore, the ＂bottom-up＂ may be more suitable to create devices with sizes down to the molecular level. A molecular or supramolecular system, in which the relative position of the component parts can be altered by an external stimulus, a molecular switch, can act as the basic unit for the creation of new molecular devices .展开更多
The addition reaction of p chlorobenzaldoxime dehydrodimer and 1,3 dienes in refluxing chloroform gives linear 1,4 addition products. The reaction is probably a free radical process.
Ethyl (Z)-α-formylamino-β-arylacrylates were obtained in good yields by the condensation of ethyl N, N-diformylamino acetate and aromatic aldehydes in the presence of sodium ethoxide in ethanol. The structure of eth...Ethyl (Z)-α-formylamino-β-arylacrylates were obtained in good yields by the condensation of ethyl N, N-diformylamino acetate and aromatic aldehydes in the presence of sodium ethoxide in ethanol. The structure of ethyl α-formylaminocinnamate was characterized by single crystal X-ray diffraction measurement.展开更多
Three 1:1 adducts have been obtained by heating benzaldoxime dehydrodimer with styrene. The main product possesses the structure of bis-nitrone type. A radical addition mechanism is pro- posed.
基金Supported by the National Natural Science Foundation of China(No.20272019).
文摘Introduction Although devices based on pseudorotaxanes, cantenanes, and rotaxanes are commercialized yet, several researches have been done on the applications of these donor-acceptor molecules. A promising area is the field of nanotechnology. The miniaturization of semi-conductor technology by the ＂top-down＂ approach is limited by the wavelength of the radiation used in the lithography to prepare electronic components. Therefore, the ＂bottom-up＂ may be more suitable to create devices with sizes down to the molecular level. A molecular or supramolecular system, in which the relative position of the component parts can be altered by an external stimulus, a molecular switch, can act as the basic unit for the creation of new molecular devices .
文摘The addition reaction of p chlorobenzaldoxime dehydrodimer and 1,3 dienes in refluxing chloroform gives linear 1,4 addition products. The reaction is probably a free radical process.
文摘Ethyl (Z)-α-formylamino-β-arylacrylates were obtained in good yields by the condensation of ethyl N, N-diformylamino acetate and aromatic aldehydes in the presence of sodium ethoxide in ethanol. The structure of ethyl α-formylaminocinnamate was characterized by single crystal X-ray diffraction measurement.
文摘Three 1:1 adducts have been obtained by heating benzaldoxime dehydrodimer with styrene. The main product possesses the structure of bis-nitrone type. A radical addition mechanism is pro- posed.
