| 1. |
OPENING REMARKS |
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Annals of the New York Academy of Sciences,
Volume 158,
Issue 2,
1969,
Page 441-442
Joseph M. O'Connor,
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ISSN:0077-8923
DOI:10.1111/j.1749-6632.1969.tb56198.x
出版商:Blackwell Publishing Ltd
年代:1969
数据来源: WILEY
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| 2. |
NICKEL CATALYSTS IN CATALYTIC HYDROGENATION |
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Annals of the New York Academy of Sciences,
Volume 158,
Issue 2,
1969,
Page 443-455
J. P. Brusie,
W. M. Keely,
W. B. Mathes,
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ISSN:0077-8923
DOI:10.1111/j.1749-6632.1969.tb56199.x
出版商:Blackwell Publishing Ltd
年代:1969
数据来源: WILEY
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| 3. |
COMPETING PROCESSES ON THE SURFACE OF RANEY NICKEL DURING THE HYDROGENATION OF OLEFINS |
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Annals of the New York Academy of Sciences,
Volume 158,
Issue 2,
1969,
Page 456-470
L. Horner,
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ISSN:0077-8923
DOI:10.1111/j.1749-6632.1969.tb56200.x
出版商:Blackwell Publishing Ltd
年代:1969
数据来源: WILEY
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| 4. |
THE SELECTIVE HYDROGENATION OF 2,4‐DINITROALKYLBENZENES OVER RANEY COPPER CATALYST |
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Annals of the New York Academy of Sciences,
Volume 158,
Issue 2,
1969,
Page 471-481
William H. Jones,
William F. Benning,
Paul Davis,
Dennis M. Mulvey,
Peter I. Pollak,
James C. Schaeffer,
Roger Tull,
Leonard M. Weinstock,
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ISSN:0077-8923
DOI:10.1111/j.1749-6632.1969.tb56201.x
出版商:Blackwell Publishing Ltd
年代:1969
数据来源: WILEY
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| 5. |
MECHANISTIC COMPARISON OF HETEROGENEOUS AND HOMOGENEOUS HYDROGENATION* |
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Annals of the New York Academy of Sciences,
Volume 158,
Issue 2,
1969,
Page 482-491
Robert L. Augustine,
Jan Van Peppen,
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ISSN:0077-8923
DOI:10.1111/j.1749-6632.1969.tb56202.x
出版商:Blackwell Publishing Ltd
年代:1969
数据来源: WILEY
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| 6. |
STRUCTURAL AND KINETIC INFLUENCES ON SELECTIVITY IN HYDROGENATION |
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Annals of the New York Academy of Sciences,
Volume 158,
Issue 2,
1969,
Page 492-500
F. J. McQuillin,
R. W. Howsam,
I. Jardine,
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ISSN:0077-8923
DOI:10.1111/j.1749-6632.1969.tb56203.x
出版商:Blackwell Publishing Ltd
年代:1969
数据来源: WILEY
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| 7. |
HYDROGENATION AND EXCHANGE OF CYCLOALKENES OVER METAL CATALYSTS:cis‐ANDtrans‐CYCLODODECENE*† |
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Annals of the New York Academy of Sciences,
Volume 158,
Issue 2,
1969,
Page 501-509
Gerard V. Smith,
Mannat C. Menon,
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ISSN:0077-8923
DOI:10.1111/j.1749-6632.1969.tb56204.x
出版商:Blackwell Publishing Ltd
年代:1969
数据来源: WILEY
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| 8. |
HYDROGENATION WITH COMPLEX METAL CATALYSTS |
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Annals of the New York Academy of Sciences,
Volume 158,
Issue 2,
1969,
Page 510-525
S. J. Lapporte,
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ISSN:0077-8923
DOI:10.1111/j.1749-6632.1969.tb56205.x
出版商:Blackwell Publishing Ltd
年代:1969
数据来源: WILEY
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| 9. |
THE CHEMISTRY OF Co(I) DERIVATIVES OF VITAMIN B12AND OF RELATED CHELATES |
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Annals of the New York Academy of Sciences,
Volume 158,
Issue 2,
1969,
Page 526-539
G. N. Schrauzer,
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摘要:
SummaryThe main points of the present review can be summarized as follows:1. The existence of Co(I) derivatives is limited to strong‐field chelates, since the stabilization of spin‐paired d8‐ionsis particularly favored in planar complexes. The Co(I) chelates do not form stable adducts with Lewis bases, but weak interactions yielding five‐coordinate species are observed.2. There appear to be no basic differences between the reactions of the Co(I) center in vitamin B12sand the corresponding derivatives of simple chelates. Thus, the rates of the reactions of primary alkylating agents with vitamin B12sor cobaloximes(I) are very nearly the same.3. The dz2orbital in the Co(I) compounds is weakly antibonding, extending its charge cloud perpendicular to the plane of the molecule. This causes the Co(I) chelates to be the strongest nucleophiles known.4. All Co(I) chelates studied show three or four absorption bands between 12000 and 18000 cm‐1that are assigned to the ligand‐modified d‐d transitions. In the isolectronic nickel chelates, corresponding transitions were observed between 20000 and 28000 cm‐1.5. The reduction of vitamin B12and of cobaloximes can be achieved with a variety of reagents, e.g., NaBH4, zinc dust, thiols. New reducing agents are acyloins or ketosugars. The reduction with NaBH4is sensitive to trace‐metal catalysis. Cobaloximes(II) (but not vitamin B12) are reduced by molecular hydrogen, a fact presumably associated with the existence of dimeric, metal‐metal bonded Co(II) derivatives.6. The reduction of Co‐Salen and Co‐BAE to the Co(I) derivatives in water requires strongly alkaline conditions to prevent the decomposition into the Co(II) derivatives and hydrogen. This is a direct consequence of the higher Co(II)/Co(I) reduction potent
ISSN:0077-8923
DOI:10.1111/j.1749-6632.1969.tb56206.x
出版商:Blackwell Publishing Ltd
年代:1969
数据来源: WILEY
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| 10. |
MIXED METAL CATALYSTS IN CATALYTIC HYDROGENATION |
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Annals of the New York Academy of Sciences,
Volume 158,
Issue 2,
1969,
Page 540-559
G.C. Bond,
D.E. Webster,
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ISSN:0077-8923
DOI:10.1111/j.1749-6632.1969.tb56207.x
出版商:Blackwell Publishing Ltd
年代:1969
数据来源: WILEY
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