Results 21 to 30 of about 43,444 (345)

Injectable Microporous Annealed Particle Hydrogel Based on Guest–Host‐Interlinked Polyethylene Glycol Maleimide Microgels

open access: yesAdvanced NanoBiomed Research, 2022
Microporous annealed particle (MAP) hydrogels have emerged as a versatile biomaterial platform for regenerative medicine. MAP hydrogels have been used for the delivery of cells and organoids but often require annealing post‐injection by an external ...
Adrienne E. Widener   +3 more
doaj   +1 more source

Efficient synthesis of polyfunctionalized carbazoles and pyrrolo[3,4-c]carbazoles via domino Diels–Alder reaction

open access: yesBeilstein Journal of Organic Chemistry, 2021
The p-TsOH-catalyzed Diels–Alder reaction of 3-(indol-3-yl)maleimides with chalcone in toluene at 60 °C afforded two diastereoisomers of tetrahydropyrrolo[3,4-c]carbazoles, which can be dehydrogenated by DDQ oxidation in acetonitrile at room temperature ...
Ren-Jie Fang   +4 more
doaj   +1 more source

Chiral Phosphine Catalyzed Allylic Alkylation of Benzylidene Succinimides with Morita–Baylis–Hillman Carbonates

open access: yesMolecules, 2023
Owing to their unique chemical properties, α-alkylidene succinimides generally act as versatile synthons in organic synthesis. Compared with well-established annulations, nucleophilic alkylations of α-alkylidene succinimides are very limited. Accordingly,
Chang Liu, Jianwei Sun, Pengfei Li
doaj   +1 more source

Distribution and significance of maleimides in organic matter-enriched shales and derived crude oils

open access: yesShiyou shiyan dizhi, 2022
The maleimides, or 1H-pyrrole-2, 5-diones, are one of the novel types of biological markers existed in both sedimentary organic matter and petroleum, which could be products derived from the degradation of chlorophylls and bacteriochlorophylls.
Guangli WANG   +3 more
doaj   +1 more source

Maleimides Designed for Self-Assembly and Reactivity on Graphene

open access: yesMolecules, 2015
Two new maleimide derivatives have been synthesized, prone to self-assemble and react with graphene as dienophiles. Both compounds bear a long alkyl chain on the carbon-carbon double bond position 3.
Cristina Mattioli   +2 more
doaj   +1 more source

Clusteroluminescence from Cluster Excitons in Small Heterocyclics Free of Aromatic Rings

open access: yesAdvanced Science, 2021
The study of nonconventional luminescence is important for revealing the luminescence of natural systems and has gradually drawn the attention of researchers in recent years. However, the underlying mechanism is still inexplicable.
Benzhao He   +10 more
doaj   +1 more source

Synthesis and characterization of novel bioactive 1,2,4-oxadiazole natural product analogs bearing the N-phenylmaleimide and N-phenylsuccinimide moieties

open access: yesBeilstein Journal of Organic Chemistry, 2013
Taking into consideration the biological activity of the only natural products containing a 1,2,4-oxadiazole ring in their structure (quisqualic acid and phidianidines A and B), the natural product analogs 1-(4-(3-tert-butyl-1,2,4-oxadiazol-5-yl)phenyl ...
Catalin V. Maftei   +6 more
doaj   +1 more source

Application of 7-azaisatins in enantioselective Morita–Baylis–Hillman reaction

open access: yesBeilstein Journal of Organic Chemistry, 2016
7-Azaisatin and 7-azaoxindole skeletons are valuable building blocks in diverse biologically active substances. Here 7-azaisatins turned out to be more efficient electrophiles than the analogous isatins in the enantioselective Morita–Baylis–Hillman (MBH)
Qing He, Gu Zhan, Wei Du, Ying-Chun Chen
doaj   +1 more source

1-Phenyl-4-(triphenylphosphanylidene)pyrrolidine-2,3,5-trione

open access: yesActa Crystallographica Section E, 2008
In the title compound, C28H20NO3P, the five-membered maleimide ring is almost planar. The interplanar angles between the maleimide ring and the three P-bound phenyl rings are 70.6 (2), 60.4 (2) and 54.68 (18)°, while the dihedral ...
Da-He Fan
doaj   +1 more source

Functionalization of a Triazine Dendrimer Presenting Four Maleimides on the Periphery and a DOTA Group at the Core

open access: yesMolecules, 2016
A readily and rapidly accessible triazine dendrimer was manipulated in four steps with 23% overall yield to give a construct displaying four maleimide groups and DOTA.
Changsuk Lee, Kun Ji, Eric E. Simanek
doaj   +1 more source

Home - About - Disclaimer - Privacy