Tandem construction of flavone-bridged conjugated porous polymers for photosynthesis of 2,3-dihydrobenzofurans.

Conjugated porous polymers bearing flavone moieties (FL-CPPs) were synthesized a tandem approach. The carbonylative Sonogashira coupling in tandem with cyclization guided the assembling of building blocks with the accompanied production of flavone skeletons. The FL-CPPs were proved to be efficient metal-free photocatalysts for the [3+2] cycloaddition of phenols with olefins under the irradiation of visible-light.

Benzothiadiazole-Based Ordered Mesoporous Polymer as a Versatile, Metal-Free Heterogeneous Photocatalyst.

Visible-light active heterogeneous organophotocatalysts have recently gained considerable interest in organic synthetic community. Ordered mesoporous polymers (OMPs) are highly promising as heterogeneous alternative to traditional precious metal/organic dyes-based photocatalysts. Herein, we report the preparation of a benzothiadiazole functionalized OMPs (BT-MPs) through a "bottom-up" strategy.

Development and Mechanical Analysis of Human Liver Model During Impact.

Liver injury is one of the most severe traffic trauma. The development of accurate liver finite element model is beneficial for improving the biofidelity and validity in crash simulations, aiming to analyze the injury in accidents. 12 human liver finite element models in the current research were constructed from high resolution CT data of a Chinese male 50th percentile human subject, including the main structures like left lobe, right lobe, capsule, parenchyma and falciform ligament.

Direct annulation between glycine derivatives and thiiranes through photoredox/iron cooperative catalysis.

A visible-light-induced aerobic oxidative [2+3] cycloaddition reaction between glycine derivatives and thiiranes has been disclosed, which provides an efficient and atom-economical strategy for the rapid synthesis of thiazolidine-2-carboxylic acid derivatives and the post-modification of glycine-derived dipeptides under mild conditions with good yield and high diastereoselectivities. A preliminary mechanistic study favors a pathway involving a cooperative photoredox catalysis and iron catalysis.

One-step assembly of a MacMillan catalyst-based phenolic-type polymer.

We report herein a "bottom-up" approach for the one-step assembly of a MacMillan catalyst-based phenolic-type polymer (Mac-CP). The resulting self-supported polymeric organocatalyst possesses homogeneously distributed and highly concentrated catalytic sites. Furthermore, Mac-CP is soluble in CHCN but insoluble in hexane.

A review of the signaling pathways of aerobic and anaerobic exercise on atherosclerosis.

Atherosclerosis (AS), a chronic inflammatory vascular disease with lipid metabolism abnormalities, is one of the major pathological bases of coronary heart disease. As people's lifestyles and diets change, the incidence of AS increases yearly. Physical activity and exercise training have recently been identified as effective strategies for lowering cardiovascular disease (CVD) risk.

Visible-light-induced C-H functionalization of glycine derivatives by cerium catalysis.

A Ce(III)-catalyzed, visible-light-induced aerobic oxidative dehydrogenative coupling/aromatization reaction between glycine derivatives and alkenes has been developed, which provides an efficient approach for the synthesis of quinoline derivatives and post-modification of oligopeptides containing glycine residues under mild conditions without the need for external photosensitizers.