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- W2462466410 abstract "(m), (iv) For (I) and (llI) 2-thienyl, for (II) and (IV) 3-thienyl. 5-Lithium derivatives were smoothly formed on metallating (i) and (III) by the action of BuLl in a mixture of THF-ether and on treatment with DMF were converted into aldehydes (V) and (VI) in yields of 84 and 80.5%, respectively. Aldehyde (VI) was also obtained by the dehydration of (V) in H2SO~ in 15% yield (Table i). Pertungstate oxidation of aldehydes (V) and (VI) proceeded only at the secondary amino group and led to the formation of stable radicals (VII) and (VIII) in 60-80% yield." @default.
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- W2462466410 date "1985-01-01" @default.
- W2462466410 modified "2023-09-27" @default.
- W2462466410 title "The preparation of spin-labeled thienylacetic acid has been described in a previous communication (ii. This compound was the starting material for the synthesis of paramagne- tic analogs of semisynthetic antibiotics. In a development in this direction it seemed of interest to obtain paramagnetic protected thiophenaldehydes" @default.
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