Synthetic method of asymmetry polyarylamino\|benzaldehydes by the selective formylation of polyarylamines in Vilsmeier\|Haack reaction was studied. Five polyarylamino\|benzaldehydes, \{4\|\%N\|\%methylphenylamino\}\|b...Synthetic method of asymmetry polyarylamino\|benzaldehydes by the selective formylation of polyarylamines in Vilsmeier\|Haack reaction was studied. Five polyarylamino\|benzaldehydes, \{4\|\%N\|\%methylphenylamino\}\|benzaldehyde, 4\|\%N\|\%（\%n\%\|butyl）\|phenylamino\|benzaldehyde, 4\|diphenylamino\|benzaldehyde, 4\|\%N\|\%phenyl\|diphenylamino\|benzaldehyde, 4\|\%N\|\%phenyl\|（4′\|diphenylamino）diphenylamino\|benzaldehyde were synthesized by the selective formylation of the polyarylamines with POCl\-3 and DMF in the yields of 67%\92%. The structures of these aldehydes were characterized by MS, \{\}\+1H NMR, IR. The studied results showed that the yields and selectivity of asymmetry polyarylamino\|benzaldehydes were found to relate with the reaction time, structures of polyarylamines and the molar ratio of the reactants.展开更多
The Vilsmeir formylation of 6 dialkylferrocenes has been found to produce nearly exclusively β isomers.The effect of temperature and the substrates etc.on the reaction was investigated.The structures of these compoun...The Vilsmeir formylation of 6 dialkylferrocenes has been found to produce nearly exclusively β isomers.The effect of temperature and the substrates etc.on the reaction was investigated.The structures of these compounds were characterized by elementary analysis、IR and 1HNMR.展开更多
文摘Synthetic method of asymmetry polyarylamino\|benzaldehydes by the selective formylation of polyarylamines in Vilsmeier\|Haack reaction was studied. Five polyarylamino\|benzaldehydes, \{4\|\%N\|\%methylphenylamino\}\|benzaldehyde, 4\|\%N\|\%（\%n\%\|butyl）\|phenylamino\|benzaldehyde, 4\|diphenylamino\|benzaldehyde, 4\|\%N\|\%phenyl\|diphenylamino\|benzaldehyde, 4\|\%N\|\%phenyl\|（4′\|diphenylamino）diphenylamino\|benzaldehyde were synthesized by the selective formylation of the polyarylamines with POCl\-3 and DMF in the yields of 67%\92%. The structures of these aldehydes were characterized by MS, \{\}\+1H NMR, IR. The studied results showed that the yields and selectivity of asymmetry polyarylamino\|benzaldehydes were found to relate with the reaction time, structures of polyarylamines and the molar ratio of the reactants.
文摘The Vilsmeir formylation of 6 dialkylferrocenes has been found to produce nearly exclusively β isomers.The effect of temperature and the substrates etc.on the reaction was investigated.The structures of these compounds were characterized by elementary analysis、IR and 1HNMR.
