
TY  - JOUR
A1  - Clark-Lewis, JW 
A1  - Aldous, GL 
A1  - Thompson, MJ 
T1  - 1,1',3,3'-Tetramethyl-5-(4-methylamino-3-nitrobenzyl)-5,5'-methylenebisbarbituric acid
JF  - Australian Journal of Chemistry
JO  - Aust. J. Chem.
Y1  - 1976
VL  - 29
IS  - 10
SP  - 2219
EP  - 2223
KW  - 
UR  - https://doi.org/10.1071/CH9762219 
N2  - The previously proposed structure (2) for the compound named in the title is confirmed by spectroscopic methods and by synthesis of related compounds. The barbituric acid undergoes a very facile thermal fragmentation in the mass spectrometer into 1,3-dimethyl-5-(4-ethylamino-3-nitrobenzy1)-barbituric acid (3) (which was also prepared by unambiguous synthesis) and 1,3-dimethyl-5-methylenebarbituric acid (4). The electron-impact, chemical-ionization, and negative-ion mass spectrometric behaviour of the barbituric acid (2) was examined. 
ER  -

