摘 要: | <正> INTNDDUCTION. In our study on ketene aminals, it has been discovered that there are some differences between 2-(benzoylmethylene)imidazolidine and 2-(benzoylmethylene)hexahydropyrimidine in their reactivities and spectral data of NMR and IR. The crystal structure of the title compound was determined in order to carry out a systematic investigation on these problems.
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