Zobrazeno 1 - 10 of 27 pro vyhledávání: '"Bruce M. Branan"'
1
Synthesis and Conformational Properties of Several Maximally Substituted Hexa(spirotetrahydrofuranyl)cyclohexanes. Assessment of the Pronounced Bias of theAll-TransD3d-Symmetric Isomer for Total Equatorial Oxygen Occupancy
Autor: Jinsung Tae, Leo A. Paquette, Shawn W. E. Eisenberg, David G. Bolin, Bruce M. Branan
Publikováno v: The Journal of Organic Chemistry. 65:9172-9179
The poly(spirotetrahydrofuranyl)cyclohexanes 1-4 were prepared in a series of steps that began with oxidative demercuration of pentaspirocyclic chloromercurials. Once the resulting alcohols were transformed into their ketones, it proved possible to c
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::db27e1b9f67e58da6b393f2b8c9649a7
https://doi.org/10.1021/jo0014313
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2
Unprecedented loss of stereochemical integrity at a neighboring quaternary carbon during oxidation of a highly substituted cyclohexanol
Autor: Leo A. Paquette, Bruce M. Branan, Marshall Stepanian
Publikováno v: Tetrahedron Letters. 37:1721-1724
Whereas the oxidation of alcohol 3 with various types of reagents leads cleanly to ketone 5 , the epimeric alcohol 4 under identical circumstances experiences competitive desymmetrization to provide mixtures of 5 and 6 .
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::bd3ce58f710b4849e598ddda7983ec66
https://doi.org/10.1016/0040-4039(96)00118-9
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8
Analysis of the Conformational Nature, Resolvability, and Thermal Racemization of Hetero 2,3-Dispiro Cyclohexanones. The Weighting of Carbonyl/C-X Stabilization Relative to the Electronic Interaction between the Vicinal Electronegative Substituents
Autor: Leo A. Paquette, Dirk Friedrich, Scott D. Edmondson, Robin D. Rogers, Bruce M. Branan
Publikováno v: Journal of the American Chemical Society. 116:506-513
A series of hetero 2,3-dispiro cyclohexanones has been prepared. The conformations of the syn and anti isomers were assessed in the solid state, in solution, and in the gas phase (the latter by molecular mechanics calculations). The results are discu
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b71177db7af94b4547f8b56c47b00e2a
https://doi.org/10.1021/ja00081a010
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