1959
DOI: 10.1002/hlca.19590420344
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Zur Konstitution von Benzophenon‐2‐carbonsäure‐Derivaten

Abstract: 1085 7X-Nor-progesteron ( X V I ) .Zu einer Losung von Methylmagnesiumbromid in 35 ml Ather, bereitet aus 1.5 g Magnesium und 5,95 g Methylbromid, tropftc man innerhalb von 5 Min. eine Losung von 107 mg Nitril XXI vom Smp. 185-186" in 15 ml Athcr zu. Dann wurdc unter Riihren 2 Tage unter Riickfluss gekocht. Unter Eiskiihlung wurdcn anschliessend sorgfaltig 25 ml Eisessig zugetropft, darauf wurde mit 50 ml Wasser verdiinnt und nach Abdampfen des ikthcrs 30 Min. bei 100' gehalten. Die kalte Reaktionslosung verdi… Show more

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Cited by 58 publications
(14 citation statements)
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“…B E C K M A N N or SCHMIDT rearrangemcnt of ethyl tuans-4-oxo-l-phcnyl-2-tctralincarboxylate (2) affords ethyl tvans-2,3,4,5-tetrahydro-2-0~0-5-phenyl-l H-benzo [b] azcpine-4carboxylate ( 4 ) . Mild treatment ol tvans-2,3,4,5-tctrahpdro-l-methyl-2-oxo-5-phcnyl-l H-benzo- [b] azcpine-4-carboxylic acid (7) with thionyl chloride and pyritiine in dimethylformamide and s u b s q u e n t reaction with an aminc yields the corresponding henzazepitie-4-carboxamide. If heat is applied during the preparation of the acid chloride, rearrangement occurs yielding cis and trans derivatives of hydrocarbostyril.…”
Section: Synthese Von Benzazepinen Und Ihre Umlagerung In Chinoline Umentioning
confidence: 99%
“…B E C K M A N N or SCHMIDT rearrangemcnt of ethyl tuans-4-oxo-l-phcnyl-2-tctralincarboxylate (2) affords ethyl tvans-2,3,4,5-tetrahydro-2-0~0-5-phenyl-l H-benzo [b] azcpine-4carboxylate ( 4 ) . Mild treatment ol tvans-2,3,4,5-tctrahpdro-l-methyl-2-oxo-5-phcnyl-l H-benzo- [b] azcpine-4-carboxylic acid (7) with thionyl chloride and pyritiine in dimethylformamide and s u b s q u e n t reaction with an aminc yields the corresponding henzazepitie-4-carboxamide. If heat is applied during the preparation of the acid chloride, rearrangement occurs yielding cis and trans derivatives of hydrocarbostyril.…”
Section: Synthese Von Benzazepinen Und Ihre Umlagerung In Chinoline Umentioning
confidence: 99%
“…In the 2-aroylbenzoic acid molecule the electrophilicity of a keto group is low owing to ketone group conjugation with two benzene rings. Hence, 2-aroylbenzoic acids both in the solid state and in solutions exist predominantly as the open form [26,29,64,[78][79][80], unless special structural factor stabilize the ring form. Ring-chain equilibrium constants of 2-(3-X or 4-X-benzoyl)benzoic acids, determined [26,32] in dioxan by the IR method, lie within the range of 0.03-0.10 (see Table 3).…”
Section: Footnotes Tomentioning
confidence: 99%
“…9). The hydrogen bonded C=O group bands of crystalline 2benzoylbenzamides, strictly established as cyclic [33,80,146,170,205], have sometimes been erroneously attributed to the overlapping bands (IJc=o diarylketone + amide-I) of open isomers (3A). This led to an incorrect conclusion [151,191,206] about the structure of these ami des in solid state, the incorrectness of which is confirmed [207] by the absence of an amide-II band and the presence of a broad OH band in the spectra.…”
Section: Amides Hydrazides and Amidinesmentioning
confidence: 99%
“…The method has also been used for structure determination of various substituted o-benzoylbenzoic acid derivatives (186), and it was found that mandelic, hippuric, phenylacetic, and benzoic acids suppress the wave for phenylglyoxylic acid (451) ; the method has been applied to a study of the kinetics of hydrolysis of various ethyl arylacrylates (472).…”
Section: 234-tetracarboxy-lj3-butadiene Another Possible Intermementioning
confidence: 99%