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ChemicalBook CAS DataBase List 2-METHYLUNDECANAL
110-41-8

2-METHYLUNDECANAL synthesis

9synthesis methods
By cracking the corresponding glycidic acid; from α-nonyl acrolein; from methyl nonyl ketone and ethyl monochloroacetate in the presence of sodium ethylate
-

Yield:-

Reaction Conditions:

with palladium on activated charcoal;hydrogen at 120; under 21002.1 Torr;

Steps:

1; 2
Hydrogenation: using crude methyleneundecaldehyde as raw material, 100 kg of palladium on carbon catalyst,The reaction temperature was 120 ° C or lower and the pressure was 2.8 MPa.The sampling test showed that methyleneundecaldehyde was 0.73%, and the hydrogenation was completed.After filtration, the distillation was carried out to obtain 3,853 kg of the finished product, and the methyl acetaldehyde content of the chromatographic analysis was 99.02%.The total reaction yield was 74%

References:

Jiangsu Xinrui Flavors Co., Ltd.;Weng Weidong;Xi Jianzhong;Liu Yang;Ying Sibin;Ying Dengyu CN108383700, 2018, A Location in patent:Paragraph 0014; 0018; 0019; 0023

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