Journal
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
Volume 144, Issue 51, Pages 23685-23690Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jacs.2c11501
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Funding
- NIGMS [R35 GM 131680]
- NIH NCI [R21 EB 032027]
- AbbVie
- NSF Major Research Instrumentation Program [NSF CHE-1827457]
- NIH [3R01GM118510-03S1, 3R01GM087605-06S1]
- Vagelos Institute for Energy Science and Technology
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In this study, we have disclosed the first photoinduced [3 sigma + 2 sigma] cycloaddition for the synthesis of trisubstituted bicyclo[3.1.1]heptanes using bicyclo[1.1.0]butanes and cyclopropylamines. This method offers mild and operationally simple conditions, along with unique meta-substituted arene bioisosteres.
The development of synthetic strategies for the preparation of bioisosteric compounds is a demanding undertaking in medicinal chemistry. Numerous strategies have been developed for the synthesis of bicyclo[1.1.1]pentanes (BCPs), bridge-substituted BCPs, and bicyclo[2.1.1]hexanes. However, progress on the synthesis of bicyclo[3.1.1]heptanes, which serve as meta-substituted arene bioisosteres, has not been previously explored. Herein, we disclose the first photoinduced [3 sigma + 2 sigma] cycloaddition for the synthesis of trisubstituted bicyclo[3.1.1]heptanes using bicyclo[1.1.0]butanes and cyclopropylamines. This transformation not only uses mild and operationally simple conditions but also provides unique meta-substituted arene bioisosteres. The applicability of this method is showcased by simple derivatization reactions.
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