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Amide formation from acids and thiourea

✍ Scribed by Azizur Rahman; M. O. Farooq

Publisher
Springer
Year
1953
Tongue
English
Weight
165 KB
Volume
40
Category
Article
ISSN
0028-1042

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πŸ“œ SIMILAR VOLUMES

Reactions between acids and thiourea: Pa
Reactions between acids and thiourea: Part I. The formation of amides from acids and thiourea
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## Abstract A method for the preparation of acid amides by heating an equimolecular mixture of acid and thiourea, is described. The method has been successfully applied to aliphatic mono‐ and di‐basic acids, aryl‐aliphatic acids as well as benzoic acid. The yield has been found to be dependent upon

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Equimolar amounts of carboxylic acids, aryl or alkyl azides, and Ph3P in refluxing benzene (hexane, toluene) afford amides in good yields. Insolubility of zwitterions Ph3&NH(CH2),COO', arising from w-azido acids and Ph3P, limits the utilization of the method for loctame formation. A plethora of phos

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We studied the coupling of thiocarboxylic acid and alkyl azide using various triaryl phosphines. Amide formation greater than 95% was achieved when the free-formation of Staudinger intermediate with electron deficient triaryl phosphines was employed.