摘要:

Abstract7‐Phenylcycloheptatriene‐1,3,5 rearranges on heating to a mixture of the 3‐, 1‐ and 2‐isomers. These are formed in the order indicated by successive trans‐annular 1‐5 shifts of hydrogen. The isomerization of the 7‐ to the 3‐isomer, by which the trienic and aromatic systems enter into conjugation, is appreciably faster than the 1‐5 shift in cycloheptatriene itself. The interconversion of the 3‐ and 1‐isomers, however, proceeds at a rate comparable with that of the unsubstituted compound.The nature of the solvent has no influence on th

ISSN:0165-0513    

DOI:10.1002/recl.19630820802

出版商:WILEY‐VCH Verlag    

年代:1963

数据来源: WILEY

摘要:

AbstractNitriles can be obtained in good yields (60‐80%) by treatment with oxygen at 30° of a methanolic solution of the corresponding aldehyde, containing ammonia, a strong base and a catalytically active copper complex. Yields are lower for base‐sensitive aldehydes.In a similar way, but in much poorer yields, cyanide and cyanate are formed from methanol, ammonia and oxygen, and isonitriles from methanol, a primary aliphatic amine and ox

ISSN:0165-0513    

DOI:10.1002/recl.19630820803

出版商:WILEY‐VCH Verlag    

年代:1963

数据来源: WILEY

摘要:

AbstractThe preparation and anthelmintic properties of isopelletierine and four side‐chain homologues are described. The compounds were prepared from Δ1‐piperideine and 3‐oxo‐acids at pH 4‐5. pK′a−and Rf‐values were determined. Anthelmintic activity as testedin vitroon the liver fluke, by three methods, was highest for 1‐(2′‐piperidyl)butanone‐2. The differences in anthelmintic properties of the

ISSN:0165-0513    

DOI:10.1002/recl.19630820804

出版商:WILEY‐VCH Verlag    

年代:1963

数据来源: WILEY

摘要:

AbstractThe autoxidation of n‐octyl mercaptan and thiophenol in tert‐butanol containing varying amounts of potassium tert. butoxide, yields as the only products disulfide and/or acids (sulfinic and sulfonic). It appears that disulfide is formed from unionized mercaptan, whereas the acids originate in the mercaptide ion. A mechanism for the formation of the acids is presented, in which the sulfenate anion (RSO−) is an important intermediate. The primary species formed in the reaction of mercaptide ion with oxygen is thought to react preferentially with unionized mercaptan to give the disu

ISSN:0165-0513    

DOI:10.1002/recl.19630820805

出版商:WILEY‐VCH Verlag    

年代:1963

数据来源: WILEY

ISSN:0165-0513    

DOI:10.1002/recl.19630820806

出版商:WILEY‐VCH Verlag    

年代:1963

数据来源: WILEY

摘要:

Abstract2‐Hydroxythiophen exists at room temperature mainly in the tautomeric form 2(5H)‐thiophenone13and is conveniently prepared3by splitting 2‐thienylt‐butyl ether by heating it with catalytic amounts ofp‐toluenesulphonic acid at about 150°. 2(5H)‐Thiophenone, an α,β‐unsaturated cyclic thioester (thiolactone), has been shown to undergo Michael addition with different types of so‐called active m

ISSN:0165-0513    

DOI:10.1002/recl.19630820807

出版商:WILEY‐VCH Verlag    

年代:1963

数据来源: WILEY

摘要:

AbstractBelow a brief description is given of a number of hitherto unknown acyl‐trityl, acyl‐benzyl, and acyl‐benzylidene derivatives of gly

ISSN:0165-0513    

DOI:10.1002/recl.19630820808

出版商:WILEY‐VCH Verlag    

年代:1963

数据来源: WILEY

摘要:

AbstractThe reaction mechanism of the reduction o certain 2‐benzoylbenzoic acids and esters is discussed. It is suggested that the carboxyl group directs product formation either by neighboring group participation or by facilitating the hydrogenolysis of the carbinol group. Furthermore, it is concluded that the intermediate in the reduction of the esters does not contain a carbinol grou

ISSN:0165-0513    

DOI:10.1002/recl.19630820809

出版商:WILEY‐VCH Verlag    

年代:1963

数据来源: WILEY

ISSN:0165-0513    

DOI:10.1002/recl.19630820810

出版商:WILEY‐VCH Verlag    

年代:1963

数据来源: WILEY

摘要:

AbstractThe solid‐liquid equilibria present in mixtures of sulphur trioxide and selenium trioxide have been investigated. Homogeneous mixed crystals exist in a wide range of SeO3‐ concentrations up to 100% SeO3. T he system has a eutectic at 15° with a composition of 0.03 mole % SeO3and 99.97 mole % SO3.The melting point (120.9 ± 0.5°) and the heat of fusion (1.7 kcal/mole SeO3) of pure SeO3were dete

ISSN:0165-0513    

DOI:10.1002/recl.19630820811

出版商:WILEY‐VCH Verlag    

年代:1963

数据来源: WILEY