435 



I( had, indeed, already appeared that llie addition of iiietliyl 

 iodide to the pyridyl pyrrole of melting point 90° only takes place 

 at a higher teniperatine, whereas Pictet and Ckepieux' pyridyl 

 pyrrole coiribiiies with methyl iodide already at the ordinary tem- 

 perature. 



Kor this reason we have heated a mixture of pyridyl pyrrole 

 potassium with methyl iodide in molecular quantities in a sealed 

 lube at 50°. The reaction mixture was a solid mass, in which pyridyl 

 pyrrole |)0tassium and the above mentioned methyl iodide compound 

 of C-(pyri(lyi)-N-methyl-pyrrole were present. It was, however, 

 possible lo extract by means of ether a little of a yellow oil from 

 this reaction mixture. This liquid was received in alcohol, and 

 picric acid was added; a picrate crystallized out, which melted 

 at 142' when it had been recrystallized out of alcolioi, and appeared 

 to be identical with the |)icrale of the C (<(-pyridyl)-N-melliyl- 

 pyrrole described above, as apjieared from the melting point of llie 

 mixture of both pieparatioiis. 



We shall tirst of all set ourselves the task of preparing a larger 

 quantity of this C(<(-|)yridyl)-N-methyl-pyrrole, and examining its 

 properties closely. We shall further try to determine the structure 

 of the two isomeric pyridyl pyrroles more exactly. 



A full communication of this investigation will appear in the 

 Recueil des Travaux chimiques des Pays Bas. 



Organic-cliemicdl Labordtorij of the ihiivernty. 

 Amsterdam, March 1923. 



