Li Wei-jie
2005
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Journal
Fine chemicals
Abstract
Nine N,N-diethylglycine esters,namely N,N-diethylglycine n-hexyl ester,N,N-diethylglycine n-octyl ester,N,Ndiethylglycine n-decyl ester,N,N-diethylglycine n-dodecyl ester,N,N-diethylglycine n-tetradecyl ester,N,N-diethylglycine n-hexadecyl ester,N,N-diethylglycine geranyl ester,N,N-diethylglycine citronellyl ester and N,N-diethylglycine 6-hydroxy-1-hexyl ester,were synthesized by refluxing N,N-diethylglycine respectively with n-hexanol,n-octanol,n-decanol,n-dodecanol,n-tetradecanol,n-hexadecanol,geraniol,citronellol and hexan-1,6-diol in cyclohexane using SnCl_2 as catalyst.Their chemical structures were determined by IR,~1HNMR and ESI-MS spectra.The optimum reaction conditions were n(fatty alcohol)∶n(N,N-diethylglycine)∶n(SnCl_2)=1∶1.2∶0.09 and reflux time 2.5 h in cyclohexane.Yields of N,N-diethylglycine esters were 89.3%~97.6%.