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A thermal tetramer of dimethyl acetylenedicarboxylate
β Scribed by E. LeGoff; R.B. LaCount
- Book ID
- 104223964
- Publisher
- Elsevier Science
- Year
- 1967
- Tongue
- French
- Weight
- 122 KB
- Volume
- 8
- Category
- Article
- ISSN
- 0040-4039
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π SIMILAR VOLUMES
Amidines undergo cyclocondensations with dimethyl acetylenedicarboxylate (DMAD) to give highly functionalized 5-dialkylamino-4-pyrrolin-3-ones. The products are crystalline, highly colored compounds that are uniquely functionalized and represent advanced intermediates in the construction of several
Recently, we succeeded in the isolation of a tricyclic intermediate of type 3 from the reaction mixture of 26 and ADM (cf Scheme 5 ) 131. (For heptalene skeleton, the C-atom numbering according to the IUPAC Recommendations, 1979 ('Blue Book'), is retained, in line with our previous communications.)