title: (Z)-Methyl 2-methoxy-imino-3-oxo-butanoate.
abstract: The title compound, C(6)H(9)NO(4), was prepared stereoselectively as a precursor for 1-aza-dienes in a study of hetero-Diels-Alder reactions. The configuration of the C=N double bond was found to be Z, corroborating earlier assignments of similar compounds based only on NMR and IR spectroscopic analysis.
authors.forename: Jin-Yong
authors.initials: JY
authors.lastname: Lu
authors.forename: Wei-Zheng
authors.initials: WZ
authors.lastname: Shen
authors.forename: Hans
authors.initials: H
authors.lastname: Preut
authors.forename: Hans-Dieter
authors.initials: HD
authors.lastname: Arndt