Method for the preparation of α,α,...

Details Method for the preparation of α,α,... Method for the preparation of α,α,...

2006-01-31

2006-01-31

Price, Elvis O. (Department: 1621)

Organic compounds -- part of the class 532-570 series

Organic compounds

Halogen containing

C570S181000, C570S182000, C570S185000, C570S190000, C570S191000, C570S194000, C570S201000, C570S261000

Reexamination Certificate

active

06992231

ABSTRACT:
A synthesis method of α,α,α′,α′-tetrachloro-p-xylene is disclosed. The method includes reacting terephthaldicarboxaldehyde with a mixture of SOCl2and 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.

REFERENCES:
Newman et al., J. Org. Chem., vol. 43, No. 22, 1978, pp. 4367-4369.

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