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Search for "benzils" in Full Text gives 4 result(s) in Beilstein Journal of Organic Chemistry.
Development of fluorinated benzils and bisbenzils as room-temperature phosphorescent molecules
Beilstein J. Org. Chem. 2020, 16, 1154–1162, doi:10.3762/bjoc.16.102
- fluorinated benzils to emit phosphorescence, which may arise from immediate spin-orbit coupling involving the 1(n, π)→3(π, π) transition, unlike the case of fluorinated or nonfluorinated bisbenzil analogues. These findings offer a useful guide for developing novel pure organic room-temperature phosphorescent
- materials. Keywords: alkyne oxidation; benzils; bistolanes; fluorinated compounds; phosphorescence; Introduction The development of organic light-emitting molecules is recognized as one of the most important studies because of the broad application of these compounds as fluorescence probes, bio-imaging
- observed (Figure 4A and 4B). The bisbenzil derivatives, i.e., 3a–c, also show similar PL behavior to the aforementioned benzil analogues: four PL bands with λPL of 393–397, 406–412, 514–517, and 551–569 nm are observed. To gain more information about the PL process in benzils and bisbenzils, the PL spectra
NHC-catalyzed cleavage of vicinal diketones and triketones followed by insertion of enones and ynones
Beilstein J. Org. Chem. 2017, 13, 1816–1822, doi:10.3762/bjoc.13.176
- convert aldehydes to nucleophilic species, which react with activated alkenes to yield hydroacylation products [10][11][12][13][14]. When the carbonyl compounds I other than aldehyde behave similarly, functionalized 1,4-diketones IV would be produced (Scheme 1). Previously, we reported that benzils I (G
- = C(O)R1) reacted with enones III in the presence of thiazolium carbene catalysts to give double acylation products IV in good yields [15]. If enones can be replaced by ynones III in the reaction with benzils, alkenes IV having three acyl moieties would be formed directly. Related products were
- recently obtained by the dimsyl anion-promoted double acylation of enones with benzils, followed by dehydrogenation of the resulting alkanes in one pot [16]. Moreover, if the reaction of cyclic 1,2-diketone I (G = C(O)R1) with activated alkenes may take place similarly, this reaction could be utilized as a
Electron-transfer-initiated benzoin- and Stetter-like reactions in packed-bed reactors for process intensification
Beilstein J. Org. Chem. 2016, 12, 2719–2730, doi:10.3762/bjoc.12.268
- transposing the ET-mediated activation process of aromatic α-diketones (benzils) from a homogeneous batch protocol to a heterogeneous flow procedure was initially investigated by testing the efficacy of the commercially available supported bases 4–8 under batch conditions; the benzoin-type reaction of benzil
- (vide infra). By contrast, as demonstrated by the experiment of Table 1, entry 4, the 1a/2a coupling promoted by PS-BEMP 5 was found to be insensitive to the presence of air, thus further improving the practicality of the heterogeneous procedure for the umpolung of benzils. While the utilization of
- /2a coupling in microreactor R5 operated for 150 h at 50 °C. Proposed dianionic pathway for the cross-benzoin-like reaction of benzils 1 with aldehydes 2 under heterogeneous conditions. Trapping experiment. Optimization of the cross-benzoin-type reaction of benzil 1a with 2-chlorobenzaldehyde 2a
A computational study of base-catalyzed reactions of cyclic 1,2-diones: cyclobutane-1,2-dione
Beilstein J. Org. Chem. 2013, 9, 594–601, doi:10.3762/bjoc.9.64
- acids (path B); or (iii) fission of the carbonyl-C–sp3-C with formation of an aldehyde and carboxylic acid (path C). In the case of benzils, depending on the substituents on the aryl rings, all three types of reactions have been observed [2]. The benzilic acid rearrangement of cyclic 1,2-diones [3][4
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