## Abstract Condensation of 1,3,4‐trimethyl‐1,5‐dihydro‐2__H__‐pyrrol‐2‐one, prepared in high yield from 3,4‐dimethylpyrrole, with pyrrole‐2‐carboxaldehyde and 1‐methylpyrrole‐2‐carboxaldehyde gives a mixture of Z‐ and __E__‐1,3,4‐trimethyl‐2,2′‐pyrromethen‐5[1__H__]‐one (7 and 8) and 1,1′,3,4‐tetr
3,4-Dihydro-2,2′-pyrromethen-5(IH)-ones ; Synthesis and photochemical reactivity
✍ Scribed by J. H. Koek; J. Lugtenburg
- Publisher
- Elsevier Science
- Year
- 2010
- Tongue
- English
- Weight
- 122 KB
- Volume
- 104
- Category
- Article
- ISSN
- 0165-0513
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## Abstract 2,2′‐Pyrromethene‐5[1__H__]‐one\*, together with the 1‐ and 1′‐monomethyl and 1,1′‐dimethyl homologues are prepared in high yield. 2,2′‐Pyrromethene‐5[1__H__]‐one (**1**) and its 1′‐methyl homologue (**2**) are obtained in the __Z__ form and the 1‐methyl (3) and 1,1′‐dimethyl homologue