2,5-Dichlorobenzoyl cyanide synthesis
- Product Name:2,5-Dichlorobenzoyl cyanide
- CAS Number:64985-85-9
- Molecular formula:C8H3Cl2NO
- Molecular Weight:200.02
2905-61-5
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Yield:-
Steps:
4 EXAMPLE 4
EXAMPLE 4 132 g (0.5 mol) of 2,5-dichlorobenzoic acid anhydride, 105 g (0.5 mol) of 2,5-dichlorobenzoyl chloride and 32.5 g (0.5 mol) of potassium cyanide were slowly warmed to 150°-200° C. in a 500 ml flask, whilst stirring. The reaction was followed by IR spectroscopy. After conversion was complete, the mixture was subjected to fractional distillation (or, in the case of a further batch, to recrystallisation). Yield: 97 g (97% of theory) of 2,5-dichlorobenzoyl cyanide, boiling point 142°-145° C. at 15 mm Hg. 130 g (98.5% of theory of 2,5-dichlorobenzoic acid anhydride were recovered after the distillation.
References:
US4284584,1981,A
18127-79-2
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64985-85-9
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