Navigation

0 Hits

  • Previous / Next

You are using Science Of Synthesis as a Guest.
Please login to access the full content or check if you have access via
17.2.1.2.2.3 Method 3: From Annulated 1,2,3-Triazolium-1-arylimides

DOI: 10.1055/sos-SD-017-00353

Döpp, H.; Döpp, D.Science of Synthesis, (200417295.

2-Arylphenanthreno[9,10-d][1,2,3]triazolium-1-arylimides 303, obtained by oxidation in two steps from 2,2-diphenyldicarboxaldehyde bis(arylhydrazones) 302, react with dimethyl acetylenedicarboxylate to give the corresponding betaines 304 (Scheme 87). The structure of the betaine 304 (Ar1=4-BrC6H4) has been confirmed by X-ray analysis. Diethyl acetylenedicarboxylate reacts in a similar manner, although less efficiently.[‌459‌]

Meeeee 88 Meeeeeeeee ee 8-Meeeeeeeeeeeeeee[8,88-e][8,8,8]eeeeeeeeee-8-eeeeeeeeee[‌888‌]

References


Cookie-Einstellungen