摘要:

AbstractTwo series of oximes derived from pyridinyl and diazinylmethyl ketones have been prepared and tested with regard to their metal‐chelation propertie

ISSN:0022-152X    

DOI:10.1002/jhet.5570140101

出版商:Wiley‐Blackwell    

年代:1977

数据来源: WILEY

摘要:

AbstractThe mass spectrum of 2,2′‐oxydipyridine obtained by electron impact is reported. The principal fragmentations involve loss of C2IIO and CO in addition to rupture of the central bonds. Molecular rearrangements accompany the fragmentati

ISSN:0022-152X    

DOI:10.1002/jhet.5570140102

出版商:Wiley‐Blackwell    

年代:1977

数据来源: WILEY

摘要:

AbstractThe synthesis ofN‐methyl‐3‐aza[10]paracyclophane is reported which represents the first example of this ring system being formedviaan acyloin reaction. This 3‐aza[10]paraeyclophane ring system behaves physiochemically inbetween the normal [9]‐ and [10]paracyclophane ring systems. Reductive desulfurization ofN‐methyl‐3‐aza[10]paracyclophane‐6‐ethylene thioketal in ethanol provides a small amount of the title compound and an unexpected, ring‐opened product,N‐ethyl‐N‐methyl‐p‐heptylphenethylamine. A possible mechanism for the ri

ISSN:0022-152X    

DOI:10.1002/jhet.5570140103

出版商:Wiley‐Blackwell    

年代:1977

数据来源: WILEY

摘要:

AbstractThe Ortoleva‐King‐Krohnke sequence was used to prepare substituted 2‐pyridinealdoxime methiodides. The methodology was extended to prepare three analogs in which two molecules of 5‐hydroxy‐2‐pyridinealdoxime methiodide were coupled through the 5‐position w

ISSN:0022-152X    

DOI:10.1002/jhet.5570140104

出版商:Wiley‐Blackwell    

年代:1977

数据来源: WILEY

摘要:

AbstractThe reaction of 3‐pyridylacetonitrile with ethyl phenylpropiolate gave not only the expected 3‐hydroxy‐5‐phenyl‐2‐(3‐pyridyl)pent‐2‐en‐4‐ynenitrile (IX) but also a di‐Michael addition product of one molecule of the pyridylacetonitrile and two molecules of the acetylenic ester, ethyl 4‐earbethoxy‐3,5‐diphenyl‐6‐(3‐pyridyl) anthranilate (IV). Moreover, 2‐elhoxy‐6‐phenyl‐3‐(3‐pyridyl)pyrid‐4‐one (XIV) was also isolated as the eyclization product obtained after the addition of a molecule of ethanol to compound IX

ISSN:0022-152X    

DOI:10.1002/jhet.5570140105

出版商:Wiley‐Blackwell    

年代:1977

数据来源: WILEY

摘要:

AbstractThe effect of various common groups on the equilibrium 3 ⇌ 4 is discussed based on the Hammett substituent constants and the values of field and resonance constants calculated by Hansch,et al.N‐Chloroacetyl, dichloroacetyl and trichloroacetyl derivatives of 2‐azidoimidazole were also prepared. The shifting of equilibrium to the tetrazole form does not depend on the whole electron‐attracting effect of a group, but it is mainly governed by its resonance electron‐withdrawin

ISSN:0022-152X    

DOI:10.1002/jhet.5570140106

出版商:Wiley‐Blackwell    

年代:1977

数据来源: WILEY

摘要:

AbstractSome dimethylisoxazolylmethylsulfonium salts and the corresponding ylides were synthetized and their chemical behaviour studied. Dimethylsullonium‐5‐isoxazolyl methylides (XIa,b) give 5‐isoxazolyloxiranes (XIIa,d) and XIII when allowed to react with carbonyl compounds. Ring opening products from these oxiranes are also rep

ISSN:0022-152X    

DOI:10.1002/jhet.5570140107

出版商:Wiley‐Blackwell    

年代:1977

数据来源: WILEY

摘要:

AbstractSome 6, 15,16‐triazasteroidal analogues of Equilenin carrying a 7‐methyl substituent have been synthesized from 4‐methyl‐7‐methoxy‐10,11]‐dihydroisoxazolo[5,4‐i]phena

ISSN:0022-152X    

DOI:10.1002/jhet.5570140108

出版商:Wiley‐Blackwell    

年代:1977

数据来源: WILEY

摘要:

AbstractThe Overberger hydrosulfite reduction ofN‐nitroso[(3‐phenylmethylamino)methyl]pyridine gave 3‐(2‐phenylethyl)pyridine and, as determined by nmr, glc and mass spectral studies, about 15% of a mixture which consisted of the 2‐, 4‐, and 6‐(phenylmethyl)‐3‐methylpyridines, and the 3‐[2‐, 3‐, and 4‐(methylphenylmethyl)]pyridines. These by‐products resulted from the coupling of an arylmethyl fragment with the opposite aryl group. A concerted reaction is suggested for theorthocouplings and a radical rearrangement for theparacouplings. Authentic samples of three of these by‐products were prepared for comparison. A similar reduction of (+)‐N‐nitroso‐3‐[(phenylethylamino)methyl]pyridine gave (+)3‐(2‐phenylpropyl)pyridine of undetermined optical purity and by‐products which were not examined but whose nmr spectr

ISSN:0022-152X    

DOI:10.1002/jhet.5570140109

出版商:Wiley‐Blackwell    

年代:1977

数据来源: WILEY

摘要:

AbstractL'action des aroylhydrazines sur le ehlorhydrate de benziminoéther conduit aux aroyl‐liydrazones du benzoate d'éthyle. Ces composés se cyclisent thermiquemenl ou dans l'alcool en présence de carbonate de sodium pour donner les aryl‐5 phényl‐2 oxadiazoles‐1,3,4 correspondants. L'action de 1′hydrazine conduit aux amino‐4 aryl‐5 phényl‐3 4Htriazoles‐1,2,4 et au diphényl‐3,6 tétrazine‐1,2,4,5. Enfin, L'iodure de méthylmagnésium réagit sur ces hydrazones en formant les aroylhydrazones de L'acétophénone. Les spectres IR, RMN, et UV

ISSN:0022-152X    

DOI:10.1002/jhet.5570140110

出版商:Wiley‐Blackwell    

年代:1977

数据来源: WILEY