File:1911 Britannica - Aldehydes.png
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Summary
| Description |
English: By condensation of aldehydes with pyruvic acid and naphthylamines, the α-alkyl-naphthoquinoline-γ-carboxylic acids are produced; the same reaction takes place with the aromatic amines generally (Oscar Doebner, Ann. 1894, 281, p. 1). Illustration from 1911 Encyclopædia Britannica, article Aldehydes. |
| Date | |
| Source |
Encyclopædia Britannica Eleventh Edition, Vol. 1, Page 533  |
| Author | Encyclopædia Britannica, 1911 |
Licensing
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This image comes from the 13th edition of the Encyclopædia Britannica or earlier. The copyrights for that book have expired in the United States because the book was first published in the US with the publication occurring before January 1, 1930. As such, this image is in the public domain in the United States. |  |
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 20:52, 11 January 2022 | | 539 × 115 (12 KB) | DivermanAU | improve contrast and tidy |
| 22:29, 29 October 2013 |  | 539 × 115 (37 KB) | Clarice Reis | User created page with UploadWizard |
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