Synthesis of β-Lactam and Anomalous Minor Products in the (i-Pr)2NEt-Promoted Reaction of N-Chloroglycine Methyl Ester Derivative with Dichloroacetyl Chloride
作者:Z. R. Valiullina、A. M. Galeeva、N. K. Selezneva、M. S. Miftakhov
DOI:10.1134/s1070428018100196
日期:2018.10
Apart from the expected [2 + 2]-cycloaddition product, the reaction of N-chloro-N-(2-methoxy-2-oxoethyl)-β-alanine methyl ester with dichloroacetyl chloride in the presence of ethyl(diisopropyl)amine gave minor N-(1,2-dichloro-2-oxoethyl)-β-alanine methyl ester and (3E)-1,1,1-trichloro-4-(diisopropylamino)- but-3-en-2-one.
除了预期的[2 + 2]-环加成产物外,在乙基(二异丙基)胺存在下,N-氯-N-(2-甲氧基-2-氧代乙基)-β-丙氨酸甲酯与二氯乙酰氯的反应得到次要的N-(1,2-二氯-2-氧代乙基)-β-丙氨酸甲酯和(3 E)-1,1,1-三氯-4-(二异丙基氨基)-but-3-en-2-one。