Intramolecular hydrogen transfer from the alkyl substituent of a phosphine ligand to a metal atom upon the irradiation of tungsten phosphine hydride complexes

1987 ◽  
Vol 36 (5) ◽  
pp. 928-930 ◽  
Author(s):  
A. P. Pivovarov ◽  
L. M. Ioffe ◽  
Yu. V. Gak ◽  
V. D. Makhaev ◽  
A. P. Borisov ◽  
...  
Keyword(s):  
Metal Atom ◽  
Hydrogen Transfer ◽  
Alkyl Substituent ◽  
Phosphine Ligand ◽  
Hydride Complexes ◽  
Intramolecular Hydrogen

Reductive intramolecular hydrogen transfer in a d8 metal hydride promoted by carbon monoxide addition. An experimental study and its theoretical implications

1984 ◽  
Vol 23 (7) ◽  
pp. 922-929 ◽  
Author(s):  
Franco Cecconi ◽  
Carlo A. Ghilardi ◽  
Paolo Innocenti ◽  
Carlo Mealli ◽  
Stefano Midollini ◽  
...  
Keyword(s):  
Experimental Study ◽  
Carbon Monoxide ◽  
Metal Hydride ◽  
Hydrogen Transfer ◽  
Intramolecular Hydrogen

Theoretical study on intramolecular hydrogen transfer of 1-methylbutyl peroxide radical

2013 ◽  
Vol 53 (6) ◽  
pp. 431-437 ◽  
Author(s):  
Min Li ◽  
Li-Feng Xie ◽  
Xue-Hai Ju ◽  
Feng-Qi Zhao
Keyword(s):  
Hydrogen Transfer ◽  
Theoretical Study ◽  
Peroxide Radical ◽  
Intramolecular Hydrogen

Novel, intramolecular hydrogen-transfer and cyclo-addition photochemistry of cyclic 1,3-dienes

1991 ◽  
Vol 69 (10) ◽  
pp. 1554-1562 ◽  
Author(s):  
Franciscus W. A. M. Miesen ◽  
Hans C. M. Baeten ◽  
Harm A. Langermans ◽  
Leo H. Koole ◽  
Henk A. Claessens
Keyword(s):  
Hydrogen Transfer ◽  
Membered Ring ◽  
Unsaturated Ketone ◽  
Triplet Excited State ◽  
Hydroxyl Proton ◽  
Conformational Studies ◽  
Rigid System ◽  
H Nmr ◽  
Rearrangement Process ◽  
Intramolecular Hydrogen

With use of one- and two-dimensional NMR spectroscopy and deuterium labelling, the photochemistry of 9-endo-hydroxy-9-exo-vinyl-bicyclo[4.2.1]nonadiene (1) and the 9-exo-(11-dimethylvinyl)- (2) and 9-exo-ethyl- (3) analogues has been studied. Irradiation of 1–3 gave novel 8-membered ring systems 4–6 by a light-induced rearrangement process, in which the hydroxyl proton is transferred on one side of the molecule toward one of the termini of the endocyclic diene. This rearrangement process thus involves a formal hydrogen transfer, during which either H+ or H• may be transferred to a reactive diene intermediate. Replacement of the hydroxyl proton by deuterium in 1–3, and 2H NMR of the corresponding photoproducts, confirmed that the hydrogen translocation occurs intramolecularly. Prolonged irradiation of 4 and 5 results in the formation of pyran products 10 and 11 by an intramolecular photocycloaddition of the triplet excited state of the α,β-unsaturated ketone to 1,3-cis,cis-cyclooctadiene, via a stabilized bisallylic biradical intermediate. Conformational studies of the structurally more rigid system 10, which is derived from 4, revealed that the hydroxyl proton was transferred on the endo side of the molecule. Key words: intramolecular hydrogen transfer, photochemistry of hydroxy-alkyl-bicyclononadienes, intramolecular photocycloaddition, conformational studies.

scholarly journals Controlling intramolecular hydrogen transfer in a porphycene molecule with single atoms or molecules located nearby

2013 ◽  
Vol 6 (1) ◽  
pp. 41-46 ◽  
Author(s):  
Takashi Kumagai ◽  
Felix Hanke ◽  
Sylwester Gawinkowski ◽  
John Sharp ◽  
Konstantinos Kotsis ◽  
...  
Keyword(s):  
Hydrogen Transfer ◽  
Single Atoms ◽  
Intramolecular Hydrogen
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