Dipyrrylmethane X melts at 130-131O. Its condensation product melts at 188'and, al-though the analysis is beyond the usual experimental error, it,. gees best with the loss of the elements of ethanol. In spite of this, it shows no depression with its homolog melting at 204'. This unsatisfactory state of affairs was finally cleared up by a more minute examination of the course of the reaction. Because of the known sensitivity to alkali of ester groups in the a- ...
