1:2 product of 2,7-dimethyl-2H-benzothieno[2,3-c]pyrrole with dimethyl acetylenedicarboxylate
✍ Scribed by Preut, H. ;Götte, H. ;Kreher, R. P.
- Book ID
- 114508486
- Publisher
- International Union of Crystallography
- Year
- 1991
- Tongue
- English
- Weight
- 451 KB
- Volume
- 47
- Category
- Article
- ISSN
- 0108-2701
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📜 SIMILAR VOLUMES
Reaction of benzimidazole-2(2@-thione 2 with dimethyl acetylenedicarboxylate (DMAD) has been reported by Grinblat and Postovskii to give the thiazolo[3,2-albenzimidazole 2.' On mechanistic grounds, however, condensation of i with DMAD can give rise to one or more of at least four products ,2, 2, 4~
In the presence of 2.5 mol % of Pd2(dba) 3 and 5 tool % ofPPh 3, nearly eqcimolar mnounts of dimathyl nona-2,7-diyne-1,9-dioate derivatives and dimethy! acetylenedicarboxylate (DMAD) were reacted in toluene at 110 "C to give indan, phthalin, a~d isoindoline derivatives selectively in moderate to goo