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::: 技術移轉

專利名稱 Method for the preparation of alpha,alpha, alpha',alpha'-tetrachloro-p-xylene | Method for the preparation of α,α, α',α'-tetrachloro-p-xylene
專利證號 US6992231B2
國別 美國
獲證日期 2006-01-31
專利摘要 A synthesis method of α,α,α', α'-tetrachloro-p-xylene is disclosed. The method includes reacting terephthaldicarboxaldehyde with a mixture of SOCl 2 and dimethylformamide (DMF) to obtain a product mixture containing α, α,α',α'-tetrachloro-p-xylene as a major product and 4-dichloromethyl benzaldehyde as a side product, which can be separated by silica column chromatography. A synthesis method of alpha,alpha,alpha',alpha'-tetrachloro-p-xylene is disclosed. The method includes reacting terephthaldicarboxaldehyde with a mixture of SOCl2 and dimethylformamide (DMF) to obtain a product mixture containing alpha,alpha,alpha',alpha'-tetrachloro-p-xylene as a major product and 4-dichloromethyl benzaldehyde as a side product, which can be separated by silica column chromatography.

IPC國際分類號

C07C001702 | C07C001700 | C07C001704 | C07C001706 | C07C001718 | C07C0017389