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Bromination and Vilsmeier?Haack formylation of 6,7-dihydrobenzo[b]-thiophen-4(5H)-one

✍ Scribed by Drewry, D. T.; Scrowston, R. M.


Book ID
125432176
Publisher
The Royal Society of Chemistry
Year
1969
Tongue
English
Weight
734 KB
Volume
0
Category
Article
ISSN
0022-4952

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Synthesis of 6,7-dihydrobenzo[4,5]cycloh
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## Abstract The synthetic routes of 6,7‐dihydrobenzo[4,5]cyclohept[1,2‐__b__]indol‐12(5__H__)‐one 5 from either 1‐methyl or 1‐sulfonylindole‐2‐carboxaldehyde 1 or ethyl 1,2‐dimethylindole‐3‐carboxylate 6 are reported. The structure of the ketone 5a was confirmed by X‐ray crystallography. Several in