File:Benzaldehyde and diethyl malonate aldol addition.svg
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Size of this PNG preview of this SVG file: 391 × 73 pixels. Other resolutions: 320 × 60 pixels | 640 × 119 pixels | 1,024 × 191 pixels | 1,280 × 239 pixels | 2,560 × 478 pixels.
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Español: La adición aldólica del malonato de dietilo 1 y el benzaldehído 2 conduce a un solo producto 3. El control se produce porque los átomos de hidrógeno α lábiles en 1 están doblemente activados por la presencia de dos grupos carbonilo adyacentes. El benzaldehído 2 carece de átomos de hidrógeno α lábiles. El enolato que se forma es del éster y se obtiene el producto de adición cruzada (el producto de autocondensación está inhibido estéricamente).
English: Diethyl malonate 1 and benzaldehyde 2 aldol addition, leading to a lone product 3. The chemical outcome is controlled because labile α-hydrogen atoms in 1 are highly activated because there are two adjacent carbonyl groups. Benzaldehyde 2 lacks labile α-hydrogen atoms. The enolate formed comes from the ester, so the crossed addition product is obtained (the self-addition product is sterically inhibited). |
| Date | |
| Source | Own work |
| Author | Omegakent |
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 21:22, 15 March 2010 | | 391 × 73 (16 KB) | Omegakent (talk | contribs) | {{Information |Description={{es|1=La adición aldólica del malonato de dietilo '''1''' y el benzaldehído '''2''' conduce a un solo producto '''3'''. El control se produce porque los átomos de hidrógeno α lábiles en '''1''' están doblemente activado |
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