1986
DOI: 10.1002/ardp.19863190908
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N‐Acyl‐Harnstoffe und ihr Verhalten gegen Amine

Abstract: Einige N-Acyl-Harnstoffe ergeben in einer Spaltungsreaktion mit Aminen nicht nur die gleichen Produkte wie freie Isocyanate, sondern zeigen in Abhangigkeit von der Basizitat der Nucleophile und den elektronischen Einflussen der Substituenten eine Reihe nicht erwarteter Reaktionen. N-Acylureas and Their Behaviour Against AminesSome N-acylureas, in fragmentation reactions with amines, yield the same products as free isocyanats. Depending on the basicity of the nucleophil used and the electronic influences of the… Show more

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Cited by 5 publications
(2 citation statements)
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“…Substitution of the chlorine of 58 with methyl glycolate, and subsequent saponification of the methyl ester led to acid 59 . Conversion to the primary amide 60 and subsequent reaction with the requisite aryl isocyanate 39,40 led to target compounds 9 and 10 . Preparation of N-methylated target compound 12 (R 2 = CH 3 ) was accomplished by alkylation of 20 with methyl iodide.…”
mentioning
confidence: 99%
“…Substitution of the chlorine of 58 with methyl glycolate, and subsequent saponification of the methyl ester led to acid 59 . Conversion to the primary amide 60 and subsequent reaction with the requisite aryl isocyanate 39,40 led to target compounds 9 and 10 . Preparation of N-methylated target compound 12 (R 2 = CH 3 ) was accomplished by alkylation of 20 with methyl iodide.…”
mentioning
confidence: 99%
“…Next, we explored the copper‐catalyzed mechanochemical coupling of isocyanates on benzamides, to form benzoyl ureas (Scheme and the Supporting Information). No reaction was seen in the absence of a copper source, but LAG with 20 mol % CuCl gave benzoyl urea 3 a , which was isolated in 41 % yield.…”
Section: Resultsmentioning
confidence: 99%