
%0 Journal Article
%A Musgrave, RP 
%A Jacobsen, NW 
%A Bourne, G 
%A Kennard, CHL 
%A Smith, G 
%A Mak, TCW 
%T Cycloaddition Reactions of 3-Dimethylamino-1-methyl-1,2,4-triazinium-5-olates With Dimethyl Acetylenedicarboxylate
%J Australian Journal of Chemistry
%D 1995/06/01
%V 48
%N 6
%P 1175-1181
%K 
%R https://doi.org/10.1071/CH9951175
%U https://www.publish.csiro.au/paper/CH9951175 
%X The cycloaddition reactions of some 3-dimethylamino-1-methyl-1,2,4-triazinium-5-olates (1) with dimethyl  acetylenedicarboxylate ( dmad ) were studied. The products in all cases were found tobe dimethyl 4-dimethylamino-1-methyl-6-oxo-1,3a,6,6a-tetrahydropyrrolo[3,4-c]pyrazole-3,3a-dicarboxylate derivatives (2). The structure determinations were carried out by 1H and 13C n.m.r. and mass spectrometry, and for one derivative by single-crystal X-ray diffractometry. The mechanism of the reaction is also discussed. 
