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| 1. |
A novel synthesis of trichloromethyl sulfides |
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Recueil des Travaux Chimiques des Pays‐Bas,
Volume 89,
Issue 10,
1970,
Page 1017-1019
H. Kloosterziel,
S. van der Ven,
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摘要:
AbstractGeneration of trichloromethyl anion in the presence of thiosulfonates R′SO2SR yields the trichloromethyl sulfides Cl3CSR and sulfinate io
ISSN:0165-0513
DOI:10.1002/recl.19700891002
出版商:WILEY‐VCH Verlag
年代:1970
数据来源: WILEY
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| 2. |
Nuclear magnetic resonance determination of association constants of electron donor — acceptor complexes: The effect of reference standards and the behaviour of mixed donors: (Short communication) |
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Recueil des Travaux Chimiques des Pays‐Bas,
Volume 89,
Issue 10,
1970,
Page 1020-1024
R. Foster,
D. R. Twiselton,
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摘要:
Abstract[1] It is shown experimentally that, for both1H and19F resonances, determinations of association constant can be independent of the reference standard.[2] Mixtures of benzene and mesitylene behave in a simple additive manner in the presence of the electron‐acceptor fluoranil. This is analogous to the predicted behaviour of isomeric 1: 1 complexes formed between a single‐donor species with an acceptor in solut
ISSN:0165-0513
DOI:10.1002/recl.19700891003
出版商:WILEY‐VCH Verlag
年代:1970
数据来源: WILEY
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| 3. |
Organophosphorus compounds. Part IX: Decomposition of ω‐dimethylaminoalkyl methylphosphonofluoridates and isomerization of 2‐dipropylaminoethyl methylphosphonofluoridothionate |
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Recueil des Travaux Chimiques des Pays‐Bas,
Volume 89,
Issue 10,
1970,
Page 1025-1037
H. P. Benschop,
G. R. van den Berg,
G. W. Kraay,
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摘要:
AbstractThe decomposition product of 2‐dimethylaminoethyl methylphosphonofluoridate (IV, n = 2) was identified as 1,1,4,4‐tetramethylpiperazinium bis‐(methylphosphonofluoridate) (VI). In hexadeuteriodimethyl sulfoxide (60°), the first‐order rate of decomposition of IV (n = 2) is ∼ 830 times greater than the rate of the analogous decomposition of 2‐dimethylaminoethyl isopropyl methylphosphonate (XV).The hitherto unreported O‐2‐dimethylaminoethyl methylphosphonofluoridothioate (IX, R = Me) degrades on heating to 1,1,4,4‐tetramethylpiperazinium bis(methylphosphonofluoridothioate) (XIII, R = Me), whereas IX (R = n‐Pr) rearranges toS‐2‐di‐n‐propylaminoethyl methylphosphonofluoridothioate (XI, R = n‐Pr). Arguments are put forward that the decomposition reactions of IV (n = 2), XV and IX (R = Me), as well as the rearrangement of IX (R = n‐Pr) proceedviaa 1,1‐dialkylaziridinium cation.The decomposition of 3‐dimethylaminopropyl methylphosphonofluoridate (IV, n = 3) at 40° gives
ISSN:0165-0513
DOI:10.1002/recl.19700891004
出版商:WILEY‐VCH Verlag
年代:1970
数据来源: WILEY
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| 4. |
Organophosphorus compounds. Part X: Anticholinesterase‐properties of O‐2‐trimethylammonioethyl methyl‐phosphonofluoridothioate iodide and ofS‐2‐di‐n‐propylaminoethyl methylphosphonofluoridothioate: (Short communication) |
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Recueil des Travaux Chimiques des Pays‐Bas,
Volume 89,
Issue 10,
1970,
Page 1038-1042
L. P. A. de Jong,
H. P. Benschop,
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ISSN:0165-0513
DOI:10.1002/recl.19700891005
出版商:WILEY‐VCH Verlag
年代:1970
数据来源: WILEY
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| 5. |
Synthesis of 2‐(6′‐carboxyhexyl)‐4‐hydroxy‐3‐(3′‐hydroxyoctyl)‐1‐cyclopentanone (racemic dihydroprostaglandin E1) |
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Recueil des Travaux Chimiques des Pays‐Bas,
Volume 89,
Issue 10,
1970,
Page 1043-1053
R. Klok,
H. J. J. Pabon,
D. A. van Dorp,
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摘要:
AbstractBy the reaction of 3‐(3′‐acetoxyoctyl)‐2‐(6′‐carboxyhexyl)‐2‐cyclopenten‐1‐one, the acetoxy derivative of Prostaglandin E1‐ 237 (PGE1‐ 237), withN‐bromosuccinimide in carbon tetrachloride, followed by treatment of the reaction product with silver acetate in acetic acid, an acetoxy group was introduced at the allyl position of the ring. After hydrolysis of both acetoxy groups, 2‐(6′‐carboxyhexyl)‐4‐hydroxy‐3‐(3′‐hydroxyoctyl)‐2‐cyclopenten‐1‐one was obtained.In an attempt to convert the latter into 2‐(6′‐carboxyhexyl)‐4‐hydroxy‐3‐(3′‐hydroxyoctyl)‐1‐cyclopentanone (racemic dihydro‐PGE1), hydrogenation with a 5 % rhodium on carbon catalyst was carried out. Both reduction of the double bond in the ring and hydrogenolysis of the hydroxy group attached to the ring occurred, leading to 2‐(6′‐carboxyhexyl)‐3‐(3′‐hydroxyoctyl)‐1‐cyclo‐pentanone. However, racemic dihydro‐P
ISSN:0165-0513
DOI:10.1002/recl.19700891006
出版商:WILEY‐VCH Verlag
年代:1970
数据来源: WILEY
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| 6. |
Sterols in vernonia anthelmintica seed 8,14,(Z)‐24(28)stigmastatrienol, a new phytosterol (Short communication) |
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Recueil des Travaux Chimiques des Pays‐Bas,
Volume 89,
Issue 10,
1970,
Page 1054-1056
D. J. Frost,
J. P. Ward,
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ISSN:0165-0513
DOI:10.1002/recl.19700891007
出版商:WILEY‐VCH Verlag
年代:1970
数据来源: WILEY
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| 7. |
Addition of hydrogen halide to 1‐alkynylphosphines: Kinetics and mechanism |
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Recueil des Travaux Chimiques des Pays‐Bas,
Volume 89,
Issue 10,
1970,
Page 1057-1067
G. Borkent,
W. Drenth,
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摘要:
AbstractAddition of one molecule of hydrogen halide to the triple bond of 1‐alkynyl‐phosphines in aqueous solution is atransreaction the rate of which is proportional to the activity of the halide ions. Rates of addition of HCl and DCl are approximately equal. The rate determining step involves addition of halide ion to protonated 1‐alkynylphos
ISSN:0165-0513
DOI:10.1002/recl.19700891008
出版商:WILEY‐VCH Verlag
年代:1970
数据来源: WILEY
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| 8. |
HOdata and other properties of some hydrogen fluoride based solvents |
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Recueil des Travaux Chimiques des Pays‐Bas,
Volume 89,
Issue 10,
1970,
Page 1068-1078
G. Dalllnga,
J. Gaaf,
E. L. Mackor,
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摘要:
AbstractThe properties of a new acidic solvent system consisting of equimolar amounts of anhydrous hydrogen fluoride and oxygen‐containing components, such as alcohols, ether or acetic acid, are described. Through the addition of BF3Hammett's acidity function, HO, can be varied between ‐ 1.4 and ‐ 7. These acids proved to be particularly useful for the study of the photochemistry of aromatic hydrocarbons.Measurements of the Hammett function, HO, are reported for hydrogen fluoride containing sodium fluoride, water, ethanol an
ISSN:0165-0513
DOI:10.1002/recl.19700891009
出版商:WILEY‐VCH Verlag
年代:1970
数据来源: WILEY
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| 9. |
Photochemically induced conversion of tropylium ion into 7‐norbornadienyl ion: (Short communication) |
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Recueil des Travaux Chimiques des Pays‐Bas,
Volume 89,
Issue 10,
1970,
Page 1079-1080
H. Hogeveen,
C. J. Gaasbeek,
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ISSN:0165-0513
DOI:10.1002/recl.19700891010
出版商:WILEY‐VCH Verlag
年代:1970
数据来源: WILEY
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| 10. |
An efficient nonenzymatic conversion of benzylpenicillin to 6‐aminopenicillanic acid |
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Recueil des Travaux Chimiques des Pays‐Bas,
Volume 89,
Issue 10,
1970,
Page 1081-1084
H. W. O. Weissenburger,
M. G. van der Hoeven,
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摘要:
AbstractAn efficient procedure for the chemical conversion of benzylpenicillin to 6‐aminopenicillanic acid is described. The selective cleavage of the amide bond has been accomplished by treating the silyl ester of benzylpenicillin consecutively with phosphorus pentachloride,n‐butanol and water at low temperatu
ISSN:0165-0513
DOI:10.1002/recl.19700891011
出版商:WILEY‐VCH Verlag
年代:1970
数据来源: WILEY
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