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Expired
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GB3634/42A
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Wingfoot Corp
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Wingfoot Corp
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Publication of GB569524ApublicationCriticalpatent/GB569524A/en
Organic Low-Molecular-Weight Compounds And Preparation Thereof
(AREA)
Abstract
An aliphatic halogenketone is reacted with hydrogencyanide and the resulting cyanhydrin is acylated by means of an anhydride or halide of an aliphatic carboxylic acid or the corresponding ketene. In examples: (1) chloracetone is reacted with hydrogencyanide in the presence of sodium cyanide as catalyst and the product acylated with acetic anhydride and distilled; (2) the chlorhydrin of chlorethylmethylketone is similarly prepared and acetylated. Bromacetone, methyl-b -chlorethylketone, ethylchlormethylketone, ethyl - a - chlorethyl - ketone, ethyl - b -chlorethylketone, propylchlormethylketone, a -chlorpropylmethylketone and ethylbrommethylketone are specified ketones which may be used as starting materials. For the acylation of the cyanhydrins, acetylchloride, ketene, methylketene and dimethylketene are mentioned. The products, on heating, lose a molecule of acid to give an unsaturated derivative.
GB3634/42A1941-05-061942-03-18Nitriles and method of making the same
ExpiredGB569524A
(en)
A procedure for the preparation of carboxylic acids and their steres, derived from the cyclopropan. (Machine-translation by Google Translate, not legally binding)