1985
DOI: 10.1002/hlca.19850680804
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Synthese von 12‐Cyano‐15‐hexadecanolid durch Ringerweiterung von 1‐(3′‐Hydroxybutyl)‐2‐oxocyclododecan‐1‐carbonitril

Abstract: Synthesis of 12‐Cyano‐15‐hexadecanolide by Ring Enlargement of 1‐(3′‐Hydroxybutyl)‐2‐oxocyclododecane‐1‐carbonitrile In the presence of Bu4NF, 2‐oxocyclododecane‐1‐carbonitrile (1) reacted with acrylaldehyde to form the corresponding aldehyde 2 which was methylated, e.g. with CH3 Ti[OCH(CH3)2]3. The resulting 1‐(3′‐hydroxybutyl)‐2‐oxocyclododecane‐1‐carbonitrile (5) was converted to 12‐cyano‐15‐hexadecanolide (6) in nearly quantitative yield under the influence of Bu4NF.

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Cited by 18 publications
(6 citation statements)
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“…[12,18] α-Cyano ketones have also been employed occasionally as starting materials for the synthesis of bicyclic compounds. [19] The use of α-nitro ketones for the same purpose is not wholly unprecedented, but in most cases it was carried out as a two-step process with the isolation of the intermediate Michael adduct followed by intramolecular aldol cyclization induced either by bases or, in one example, by silica gel during chromatographic purification.…”
Section: Resultsmentioning
confidence: 99%
“…[12,18] α-Cyano ketones have also been employed occasionally as starting materials for the synthesis of bicyclic compounds. [19] The use of α-nitro ketones for the same purpose is not wholly unprecedented, but in most cases it was carried out as a two-step process with the isolation of the intermediate Michael adduct followed by intramolecular aldol cyclization induced either by bases or, in one example, by silica gel during chromatographic purification.…”
Section: Resultsmentioning
confidence: 99%
“…Jedoch ist zu bemerken, dass in Gegenwart von K F die Reaktion kontrollierter abliuft. Eine deutliche Verbesserung bei der Reduktion der Keton-Gruppe in 6 zur CH,-Gruppe in 7 gelang durch Behandlung des Tosylhydrazons von 6 rnit [(C,H,) [6] getrocknet (6 h bei 60",/10-5 Torr) und in abs. THF gelost, vgl.…”
Section: Schrmcr 2 K O O E T 8unclassified
“…C(1)); 39,5; 38,9; 29,7; 29.0; 25,4; 24,l; 23,7; 23,l; 13,9 (4, (29), 93 (14), 91 (14). 85 (12), 83 (15), 82 (14), 81 (69), 79 (28), 77 (24), 73 (13), 71 (22), 69 (28), 68 (16), 67 (48), 57 (21), 55 (52), 54 (22), 53 (30), 43 (36), 41 (100) (6)); 37,8;323;29,8;27,9;26,O;24,2;23,6;23,3;21,5 (4,CH,). El-MS: 224 (2, W . )…”
Section: Schrmcr 2 K O O E T 8unclassified
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