Synthesis of a Tight Intramolecular OH···Olefin Interaction, Probed by IR, 1H NMR, and Quantum Chemistry
摘要:
We have synthesized a molecule containing a tight hydrogen-bonding interaction between an alcohol and a nonconjugated pi-system. The strength of this hydrogen bond results in a large red shift, nearly 189 cm(-1), On the alcohol stretching frequency in the IR spectrum in comparison to a free alcohol control. The interaction is notable in that it possesses a better defined intramolecular hydrogen bond compared to the usual molecules for which it is noted, such as syn-7-norbornenol. This interaction was studied through the use of IR and NMR spectroscopy, X-ray crystallography, and molecular modeling calculations.
New trimethylenemethane cycloaddition mechanisms. Chemistry of 1--butyl-5-isopropylidenebicyclo[2.1.0]Pentane
作者:Anthony D. Sabatelli、Richard F. Salinaro、James A. Mondo、Jerome A. Berson
DOI:10.1016/s0040-4039(00)98244-3
日期:1985.1
Positioning a Carbon–Fluorine Bond over the π Cloud of an Aromatic Ring: A Different Type of Arene Activation
作者:Maxwell Gargiulo Holl、Mark D. Struble、Prakhar Singal、Maxime A. Siegler、Thomas Lectka
DOI:10.1002/anie.201601989
日期:2016.7.11
prominent role in both its reaction chemistry and spectroscopy. For example, we established that the C−F⋅⋅⋅Ar interaction can bring about a >1500 fold increase in the relative rate of an aromatic nitration reaction, affording functionalization on the activated ring exclusively. Overall, these results establish fluoro as a through‐space directing/activating group that complements the traditional role of fluorine
Synthesis of a Tight Intramolecular OH···Olefin Interaction, Probed by IR, <sup>1</sup>H NMR, and Quantum Chemistry
作者:Mark D. Struble、Maxwell Gargiulo Holl、Gavin Coombs、Maxime A. Siegler、Thomas Lectka
DOI:10.1021/acs.joc.5b00470
日期:2015.5.1
We have synthesized a molecule containing a tight hydrogen-bonding interaction between an alcohol and a nonconjugated pi-system. The strength of this hydrogen bond results in a large red shift, nearly 189 cm(-1), On the alcohol stretching frequency in the IR spectrum in comparison to a free alcohol control. The interaction is notable in that it possesses a better defined intramolecular hydrogen bond compared to the usual molecules for which it is noted, such as syn-7-norbornenol. This interaction was studied through the use of IR and NMR spectroscopy, X-ray crystallography, and molecular modeling calculations.