| | Identification | Back Directory |  | [Name] 
 (2E,4E)-5-(4-methoxy-2,3,6-trimethylphenyl)-3-methylpenta-2,4-dienal
 |  | [CAS] 
 69877-38-9
 |  | [Synonyms] 
 Acitretin Impurity 3
 (2E,4E)-5-(4-Methoxy-2,3,6-trimethylphenyl)-3-methylpenta-2,...
 (2E,4E)-5-(4-methoxy-2,3,6-trimethylphenyl)-3-methylpenta-2,4-dienal
 2,4-Pentadienal, 5-(4-methoxy-2,3,6-trimethylphenyl)-3-methyl-, (2E,4E)-
 |  | [Molecular Formula] 
 C16H20O2
 |  | [MOL File] 
 69877-38-9.mol
 |  | [Molecular Weight] 
 244.33
 | 
 | Hazard Information | Back Directory |  | [Synthesis] 
 
 GENERAL METHOD: Sodium carbonate (4.77 g, 45 mmol) and activated manganese dioxide powder (3.91 g, 45 mmol) were added to a vigorously stirred solution of alcohols 27-31 (2.2 mmol) in dichloromethane (45 mL). The resulting suspension was stirred at room temperature until the reaction was complete (monitored by thin layer chromatography) and subsequently filtered through a diatomaceous earth pad. The filtrate was evaporated to dryness to obtain the residue. The residue was purified by fast column chromatography to afford allyl aldehydes 32-36 (only the 2E,4E-isomer was plotted). |  | [References] 
 [1] European Journal of Medicinal Chemistry,  2011,  vol. 46,  # 2,  p. 721 - 737
 [2] Chemistry - A European Journal,  2014,  vol. 20,  # 29,  p. 8904 - 8908
 [3] Patent: US4169100,  1979,  A
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