A practical method to construct sulfenylated indolefused isoquinolin-6(5H)-one derivatives has been developed. Using eco-friendly ethanol as the solvent and air as the oxidant, this reaction could be compatible with sensitive molecular framework. The utility of the product was well illustrated by further transformations. Moreover, the reaction mechanism was investigated by control experiments.Note pubs.acs.org/joc
A practical palladium and amino acid
co-catalyzed hydroarylation
of unbiased alkenes has been developed. Using the transient-directing
strategy, this chemistry could construct isolated chiral Csp2–Csp3 bonds with good regio- and enantioselectivity.
The potential synthetic utility of a representative product was well-illustrated
by further transformations. Furthermore, the mechanism of this reaction
was intensively studied through control experiments and DFT calculations.
A novel NiH-catalyzed highly regioselective coupling of alkenes with vinyl chlorosilanes to construct C-Si bond have been developed. Under mild reaction conditions, a series of benzyl organosilanes with various functional...
Soil degradation threatens the forest sustainable productivity, particularly in afforestation system. Biochar derived from agroforestry waste or biomass can potentially improve the degraded forest soil and promote the tree growth. To expand the application of biochar for forestry productivity improvement, we here reviewed the effects and the underlying mechanisms of biochar on the degraded forest soil and tree growth. Totally 96 studies that conducted from pot to field investigations in China were summarized. The result suggested that biochar generally exerted positive effects on restoration of degraded forest soil such as that with compaction, acidification or soil erosion, which are mainly manifested by improving soil porosity, increasing pH, enhancing erosion resistance and mitigating greenhouse gas emissions. Furthermore, biochar incorporation promoted the growth of tested trees in most cases, which effect was mainly attributing to directly supplying nutrients, improving soil physio-chemical properties, enhancing the root's nutrient absorption capacity, and enlarging the living space. In summary, current studies demonstrate that biochar has a unique potential for improving degraded forest soils and promoting tree growth. However, investigations on the underlying mechanisms and the long-term effects should be strengthened.
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