Über die Synthese einiger Polyhydrazidcarbon- und -sulfonsäuren

Pyromellitic dianhydride (PMDA) was condensed with oxalic- and malonic-acid dihydrazides. The optimum experimental conditions have been worked out and the viscosity values were determined. The polyhydrazid carbonic acids so obtained were converted to the corresponding polymidimidcompounds by means of thermal cyclisations. Similar polycondensations were carried out with 3,3′-disulfo-4,4′-dicarboxy-diphenylsulfondianhydride and different hydrazides. The same dianhydride was also used for the synthesis of the carbodihydrazide. Further a sulfondihydrazide was prepared from 4,4′-ditolysulfon-3,3′-disulfochlorid.     

Über die Darstellung und Sulfatierung von N-substituierten 12-Hydroxyoctadecen-(9)-säure-(1)-amiden

Preparation and Sulfation of N-Substituted 12-Hydroxy-octadecan-(9) Acid-(1) Amides Ricinoleic acid amides, substituted at the nitrogen atom, were converted to the sodium salts of the monosulfuric acid esters of the substituted ricinoleic acid amides (sodium salt of substituted 12-hydroxy sulfonyl-oxy-oleic acid amide) by sulfation with chlorosulfuric acid-diethyl ester-adduct followed by neutralisation. Washing capacity as well as surface tension, angle of contact and wetting capacity in relation to the concentration of the aqueous solutions of these anion active surfactants are measured.     

Über die Konfigurationen und Konformationen einiger unsymmetrisch S-substituierter 2,3-Dimercaptobernsteinsäuren

The Configurations and Conformations of Some Unsymmetrical S-Substituted 2,3-Dimercapto Succinic Acids Some acids HOOCCH(SR)CH(SR′)COOH (R/R′ = HOOCCH₂, C₆H₅, C₆H₅CH₂ and p-ClC₆H₄CH₂, R ≠ R′) were prepared from HOOCC(SR)  CHCOOH and R′SH. Their configurations and conformations were discussed.     

Über die Autoxidation einiger monocyclischer Olefine

Studies on the Autoxidation of Some Monocyclic Olefins The autoxidations of cyclopentene, cyclohexene, cycloheptene, cyclooctene, cycloocta-1,5-diene, 1-methylcyclopentene, 1-methylcyclohexene, 1-methylcycloheptene, 1-methylcyclooctene, methylene cyclopentene, and methylene cyclohexene with pure oxygen under normal pressure were studied. The epoxides formed were determined gaschromatographically. In most cases also the products of allylic oxidation were analyzed and their structures elucidated after reduction to the corresponding allyl alcohols. The portions of high boiling or polymeric products which could not be detected gaschromatographically and also the real yields of epoxides were determined by balance experiments in the presence of inert internal standards.     

β-Thiocyanatovinylcarbonylverbindungen. IV. Darstellung und Reaktionen der 2-Thiocyanatomethylen-cycloalkanone-(1)

β-Thiocyanato-Vinylcarbonyl Compounds. IV. Preparation and Reactions of 2-Thiocyanatomethylene-cycloalkanones-(1) 2-Thiocyanatomethylene-cycloalkanones-(1) 2 were obtained from the corresponding 2-chlormethylene-cycloalkanones-(1) 1 . On reaction with substituted phenylhydrazines, the 2,4-dinitrophenylhydrazones 4b, 4c and 4e , 1,2,3-thiadiaziniumperchlorates 5a and 5a ′, and the substituted pyrazoles 7e and 7f , were isolated, respectively. From reaction of 2 with liquid ammonia, the isothiazoles 8a and 8b as well as the bis-(2-acyl-vinyl)-sulfides 9c and 9f were obtained.     

Über die Synthese einiger Antipyrylmethine. I. Asymmetrische Antipyrylmethine

Synthesis of Some Antipyryl Methines. I. Asymmetrical Antipyryl Methines A new series of asymmetrical antipyryl dimethine cyanines 2–7 was synthesized, starting with antipyrine aldehyde 1 and methylcarbenium salts, and the color change of the dyes was investigated as a function of the carbene moiety.     

Über die Synthese einiger Hydroxyalkylglyceryldiäther und deren Diester aus hydriertem Cardanol

Synthesis of Some Hydroxyalkyl Glyceryl Diethers and Their Diesters from Hydrogenated Cardanol A few hydroxyalkyl glyceryl diethers and their diesters could be synthesized by the reaction of sodium salt of hydrogenated cardanol with various hydroxyalkyl chlorohydrinethers, the latter being prepared by reacting epichlorohydrin with the corresponding glycols.     

Photochemie von Aminoketonen. X. Darstellung und diastereoselektive Photocyclisierung von N-(β-Benzoylethyl)-N-tosyl-glycinamiden

Photochemistry of Aminoketones. X. Preparation and Diastereoselective Photocyclization of N-(β-Benzoylethyl)-N-tosyl-glycinamides The title compounds 4 were prepared by MICHAEL-like addition of N-tosylglycinamides to phenyl-vinyl-ketone, generated from ω-bromo-propiophenone. 300 nm Irradiation of 4a–c (CO–NH) in benzene and acetone, respectively, causes, n, π^*-excitation and photocyclization to (3-ref-2-cis)-3-hydroxy-3-phenyl-N-tosylprolinamides 5 . Under the same conditions 4d–h (CONAlk₂) yield (3-ref-2-trans)-prolinamides 6 . The difference in diastereoselectivity is explained by intramolecular dipolar interaction in 4 ^* and intramolecular hydrogen bondings in the intermediate hydroxybiradicals.