Thiophen derivatives. Part XVII. The preparation and structure of some benzo[b]thiophen aldehydes
- 1 January 1969
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Journal of the Chemical Society C: Organic
- No. 2,p. 339-340
- https://doi.org/10.1039/j39690000339
Abstract
Benzo[b]thiophen is formylated in position 3 by dichloromethyl butyl ether in the presence of titanium tetrachloride, whereas 3-methylbenzo[b]thiophen reacts at position 2; benzo[b]naphtho[2,1-d]thiophen gives the 5-formyl derivative in the same reaction.Keywords
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