2022
DOI: 10.1039/d2ob01669a
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Preparation of new bicyclo[2.1.1]hexane compact modules: an opening towards novel sp3-rich chemical space

Abstract: Among the valuable saturated bicyclic structures incorporated in newly developed bio-active compounds, bicyclo[2.1.1]hexanes are playing an increasingly important role, while being still underexplored from a synthetic accessibility point of view....

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Cited by 38 publications
(39 citation statements)
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“…In addition, we wanted to develop a visible light-mediated procedure that would eliminate the need to use UV light sources and tolerate a broad range of functional groups. [19] We now report the results of our investigations.…”
mentioning
confidence: 84%
“…In addition, we wanted to develop a visible light-mediated procedure that would eliminate the need to use UV light sources and tolerate a broad range of functional groups. [19] We now report the results of our investigations.…”
mentioning
confidence: 84%
“… a) [2+2]‐Cycloadditionen von 1,5‐Dienen; [3] b) [2σ+2π]‐Cycloadditionen von BCBs mit Alkenen; [9b–d] c) Lewis‐Säure‐katalysierte (3+2)‐Cycloaddition von BCBs mit Iminen; [13] d) Lewis‐Säure‐katalysierte (3+2)‐Cycloaddition von Donor‐Akzeptor‐Cyclopropanen mit Ketenen; [12a] e) Diese Arbeit: Lewis‐Säure‐katalysierte (3+2)‐Cycloaddition von BCBs mit Ketenen; PS=Photosensibilisator.…”
Section: Methodsunclassified
“…[10] Im Zuge dessen entwickelten die Gruppen von Fessard und Salomé im Jahr 2022 eine milde Methode für eine solche intramolekulare Dien-[2+2]-Cycloaddition unter Verwendung eines Ir-Photosensibilisators und Bestrahlung mit sichtbarem Licht (Schema 1a). [3] Außerdem wurde die [2σ + 2π]-Cycloaddition von Bicyclo[1.1.0]butanen (BCBs) etabliert. [9,11] Obwohl bereits seit 1966 vereinzelt von intra-und intermolekularen BCB-Alken-Cycloadditionen berichtet wurde, [11a-c] haben die Arbeiten mehrerer Gruppen diesen eleganten Ansatz erst im Laufe des letzten Jahres breit anwendbar gemacht.…”
unclassified
“…Recent studies involving bicyclo[2.1.1]hexanes have focused on 1,2/1,5-disubstituted variants, which are not appropriate for rigidification of 1,3-disubstituted cyclopentanes. 5,6 The required 2,5-substitution pattern has only been prepared in low yields (Fig. 1D).…”
Section: Introductionmentioning
confidence: 99%
“…The most common method for synthesizing bicyclo[2.1.1]hexanes is a crossed [2 + 2]-cycloaddition reaction. 5 a However, the synthesis of bicyclo[2.1.1]hexanes via crossed [2 + 2] cycloaddition is limited to preparing structures with a bridgehead substituents. 7 Our interest is to establish a route that can incorporate two functional handles so that the target can be easily manipulated for rapid incorporation into drug molecules.…”
Section: Introductionmentioning
confidence: 99%