1. |
Investigations on pyrazine derivatives IV. The preparation and specific oxidation of a number of 2,3‐dialkoxy‐ and 2,3‐diaryloxy‐quinoxalines |
|
Recueil des Travaux Chimiques des Pays‐Bas,
Volume 78,
Issue 1,
1959,
Page 5-21
H. I. X. Mager,
W. Berends,
Preview
|
PDF (949KB)
|
|
摘要:
AbstractThe preparation of a number of 2,3‐dialkoxy‐ and 2,3‐diaryloxyquinoxalines is described in detail. Unlike many other substituted quinoxaline derivatives, these compounds appear to be relatively very stable towards potassium permanganate.It is demonstrated that the introduction of particular substituents into the benzene ring of these quinoxaline derivatives again produces starting materials for the preparation of pyrazine carboxylic
ISSN:0165-0513
DOI:10.1002/recl.19590780102
出版商:WILEY‐VCH Verlag
年代:1959
数据来源: WILEY
|
2. |
Synthesis of β‐phenylethylamine derivatives VIStereoisomers of 1‐(4′‐hydroxyphenyl)‐2‐(1″‐methyl‐2″‐phenoxyethylamino) propanol‐1 |
|
Recueil des Travaux Chimiques des Pays‐Bas,
Volume 78,
Issue 1,
1959,
Page 22-42
J. van Dijk,
H. D. Moed,
Preview
|
PDF (983KB)
|
|
摘要:
AbstractThe synthesis is described of the four pairs of enantiomeric modifications ofThe stereochemical structures have been correlated with those oferythro‐ andthreo‐ephedrine.Conformation analysis has been used to explain the configuration of the amino‐alcohols f
ISSN:0165-0513
DOI:10.1002/recl.19590780103
出版商:WILEY‐VCH Verlag
年代:1959
数据来源: WILEY
|
3. |
Studies onsedumalkaloids V. Synthesis and optical resolution of sedamine and sedridine |
|
Recueil des Travaux Chimiques des Pays‐Bas,
Volume 78,
Issue 1,
1959,
Page 43-58
H. C. Beyerman,
J. Eenshuistra,
W. Eveleens,
A. Zweistra,
Preview
|
PDF (769KB)
|
|
摘要:
AbstractThe synthesis of the racemates of the alkaloids sedamine and sedridine, the separation of the racemates, and their resolution into optical antipodes are described, with the exception of the resolution of (±)‐allosedridine and so far as no earlier information about these subjects has been given by us.The results are compared with data about the natural products obtained fromSedum acreandLobelia infla
ISSN:0165-0513
DOI:10.1002/recl.19590780104
出版商:WILEY‐VCH Verlag
年代:1959
数据来源: WILEY
|
4. |
The preparation of someiso‐propylp‐nitrophenyl alkylphosphonates |
|
Recueil des Travaux Chimiques des Pays‐Bas,
Volume 78,
Issue 1,
1959,
Page 59-66
A. M. de Roos,
H. J. Toet,
Preview
|
PDF (297KB)
|
|
摘要:
AbstractIn the series of theiso‐propylp‐nitrophenyl alkylphosphonates the lower homologues have been prepared by interaction ofiso‐propyl alkylphosphonochloridates and sodiump‐nitrophenoxide. All thesep‐nitrophenyl derivatives are yellow liquids; boiling points and refractive indices are given, as well as an example of the infrare
ISSN:0165-0513
DOI:10.1002/recl.19590780105
出版商:WILEY‐VCH Verlag
年代:1959
数据来源: WILEY
|
5. |
The condensation of rhodanine and derivatives with polycyclic aromatic aldehydes |
|
Recueil des Travaux Chimiques des Pays‐Bas,
Volume 78,
Issue 1,
1959,
Page 67-70
F. J. Allan,
G. G. Allan,
Preview
|
PDF (190KB)
|
|
摘要:
AbstractThe condensation products of rhodanine, 3‐ethylrhodanine and 3‐phenyl‐rhodanine with various polycyclic aromatic aldehydes have been prepared with a view to obtaining compounds with increased bacterial and fungicidal properties. The aldehydes were chosen to yield products of similar skeletal configuration to the less accessible alkyl substituted compounds. It is known that substituted benzylidene‐rhodanine derivatives show increased bacterial activity and the products obtained, by virtue of their structure, should show activity similar to di‐ and tetra‐alkyl substituted derivatives. Condensations were carried out in both ammoniacal and acid media and crystalline coloured condensation products were obtained in
ISSN:0165-0513
DOI:10.1002/recl.19590780106
出版商:WILEY‐VCH Verlag
年代:1959
数据来源: WILEY
|
6. |
The Copper‐rich part of the copper‐barium system |
|
Recueil des Travaux Chimiques des Pays‐Bas,
Volume 78,
Issue 1,
1959,
Page 71-74
P. B. Braun,
J. L. Meijering,
Preview
|
PDF (218KB)
|
|
摘要:
AbstractThe system Cu‐Ba was examined up to 75% Ba by weight. At 675° C there is a peritectic three‐phase equilibrium Cu + liquid ⇋ Cu13Ba. The compound Cu13Ba has KZn13structure. At 550° C there is a eutectic three‐phase equilibrium liquid ⇋ Cu13Ba + CuxBay. Composition and structure of the latter could not be determined owing to experimental d
ISSN:0165-0513
DOI:10.1002/recl.19590780107
出版商:WILEY‐VCH Verlag
年代:1959
数据来源: WILEY
|
7. |
Quantitative interpretation of ultra‐centrifugal and electrophoretical investigations on the eye‐lens protein, α‐crystallin |
|
Recueil des Travaux Chimiques des Pays‐Bas,
Volume 78,
Issue 1,
1959,
Page 75-82
W. F. Bon,
Preview
|
PDF (793KB)
|
|
摘要:
AbstractFrom ultracentrifugal and electrophoretical data it appears to be probable that solutions of α‐crystallin of the eye‐lens contain two subunits of equal molecular weight, differing in shape
ISSN:0165-0513
DOI:10.1002/recl.19590780108
出版商:WILEY‐VCH Verlag
年代:1959
数据来源: WILEY
|
8. |
Masthead |
|
Recueil des Travaux Chimiques des Pays‐Bas,
Volume 78,
Issue 1,
1959,
Page -
Preview
|
PDF (59KB)
|
|
ISSN:0165-0513
DOI:10.1002/recl.19590780101
出版商:WILEY‐VCH Verlag
年代:1959
数据来源: WILEY
|