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Synthesis 1997; 1997(4): 465-468
DOI: 10.1055/s-1997-1207
DOI: 10.1055/s-1997-1207
paper
© Georg Thieme Verlag, Rüdigerstr. 14, 70469 Stuttgart, Germany. All rights reserved. This journal, including all individual contributions and illustrations published therein, is legally protected by copyright for the duration of the copyright period. Any use, exploitation or commercialization outside the narrow limits set by copyright legislation, without the publisher's consent, is illegal and liable to criminal prosecution. This applies in particular to photostat reproduction, copying, cyclostyling, mimeographing or duplication of any kind, translating, preparation of microfilms, and electronic data processing and storage.
Efficient One-Pot Synthesis of Cyclopenta[b]thiophen-1-ones and 1,3-Di(2-thiophenyl)propan-1-ones from Thiophenes
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Publikationsverlauf
Publikationsdatum:
31. Dezember 2000 (online)
![](https://www.thieme-connect.de/media/synthesis/199704/lookinside/thumbnails/10.1055-s-1997-1207-1.jpg)
The reaction of N,N-dimethylacrylamide/triflic anhydride complex with substituted thiophenes led to the corresponding cyclopenta[b]thiophen-1-ones and 1,3-di(2-thiophenyl)propan-1-ones. The application of 2-bromo-N,N-dimethylacrylamide in this reaction allows 2-bromo-substituted five- or seven-membered thiophene-fused cyclic ketones to be obtained.
N,N-dimethylacrylamide - triflic anhydride - thiophene - cyclopenta[b]thiophene - dithiophenylpropanone