An rapid and efficient synthesis of 2, 4, 6-triarylpyridines is reported using substituted benzaldehydes, substituted acetophenones and ammonia as starting materials under microwave irradiation in the presence of PEG-...An rapid and efficient synthesis of 2, 4, 6-triarylpyridines is reported using substituted benzaldehydes, substituted acetophenones and ammonia as starting materials under microwave irradiation in the presence of PEG-400.展开更多
The kinetic behaviors of Wittig Horner reaction between α naphthylmethyl dibutyl phosphate and substituted benzaldehydes have been investigated.The mechanism of the reaction is discussed on the basis of the rate cons...The kinetic behaviors of Wittig Horner reaction between α naphthylmethyl dibutyl phosphate and substituted benzaldehydes have been investigated.The mechanism of the reaction is discussed on the basis of the rate constant k,Hammett ρ,correlative coefficient r,ΔS ≠.The yields of the competing reactions between benzaldehyde and p nitrobenzaldehyde and lihewis studied by the way..展开更多
二氯二茂钛与取代苯甲醛肟钠在二氯甲烷中反应,生成二茂钛单肟衍生物 Cp_2TiCl(ON=CHAr),其中 Ar 为邻硝基苯基、间硝基苯基、对硝基苯基、邻氯苯基、间氯苯基、3,4-二氯苯基、间甲氧基苯基、对甲氧基苯基、2,4-二甲氧基苯基和3,4-亚甲...二氯二茂钛与取代苯甲醛肟钠在二氯甲烷中反应,生成二茂钛单肟衍生物 Cp_2TiCl(ON=CHAr),其中 Ar 为邻硝基苯基、间硝基苯基、对硝基苯基、邻氯苯基、间氯苯基、3,4-二氯苯基、间甲氧基苯基、对甲氧基苯基、2,4-二甲氧基苯基和3,4-亚甲基二氧苯基。所有这些新化合物在干燥空气中稳定,对潮湿空气敏感.经元素分析和红外、核磁氢谱表征,确认了其结构。展开更多
基金We thank the National Natural Science Foundation of China(NO.20272047)the Northwest Normal University Science and Technology Development Foundation of China for financial support.
文摘An rapid and efficient synthesis of 2, 4, 6-triarylpyridines is reported using substituted benzaldehydes, substituted acetophenones and ammonia as starting materials under microwave irradiation in the presence of PEG-400.
文摘The kinetic behaviors of Wittig Horner reaction between α naphthylmethyl dibutyl phosphate and substituted benzaldehydes have been investigated.The mechanism of the reaction is discussed on the basis of the rate constant k,Hammett ρ,correlative coefficient r,ΔS ≠.The yields of the competing reactions between benzaldehyde and p nitrobenzaldehyde and lihewis studied by the way..
文摘二氯二茂钛与取代苯甲醛肟钠在二氯甲烷中反应,生成二茂钛单肟衍生物 Cp_2TiCl(ON=CHAr),其中 Ar 为邻硝基苯基、间硝基苯基、对硝基苯基、邻氯苯基、间氯苯基、3,4-二氯苯基、间甲氧基苯基、对甲氧基苯基、2,4-二甲氧基苯基和3,4-亚甲基二氧苯基。所有这些新化合物在干燥空气中稳定,对潮湿空气敏感.经元素分析和红外、核磁氢谱表征,确认了其结构。
