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A salt‐tolerant variety (Chuanqiao No.1) and a salt‐sensitive variety (Chuanqiao No.2) of Tartary buckwheat (Fagopyrum tataricum [L.] Gaertn.) were used as experimental materials to study the effect of saline soil and amino acids on quality and yield. The treatment concentration of Pro (proline), Glu (glutamic acid), and Asp (aspartic acid) was 30, 60, and 40 μM, respectively. Three kinds of amino acids were sprayed twice on the leaves at seedling stage (30 days after sowing) and flowering stage (50 days after sowing). The results showed that Tartary buckwheat in saline soil is more enriched in calcium (Ca), iron (Fe), zinc (Zn), and selenium (Se), and Tartary buckwheat in saline soil is more nutritious. Under appropriate kinds of amino acids treatment, the seed protein and rutin content of Tartary buckwheat were increased, and the Tartary buckwheat quality can be obviously increased. In particular, amino acids treatment can increase the yield of Tartary buckwheat in saline soil, Asp and Glu are the best in salt‐tolerant variety and salt‐sensitive one and more obvious in salt‐tolerant variety.

We herein report a “grafting from” strategy to immobilize optically active helical poly(phenyl isocyanide)s onto graphene oxide (GO) nanosheets. After covalently bounding alkyne-Pd(II) initiator onto GO nanosheets, the designed GO/polymer composites P1@GO and P1-b-P2@GO featuring single-handed helical poly(phenyl isocyanide)s growing from GO nanosheets were prepared by sequential addition of the chiral and achiral isocyanide monomers. Post-synthetic hydrolysis rendered P1-b-P3@GO to improve the hydrophilicity. The successful covalent bonding of poly(phenyl isocyanide)s chains onto GO nanosheets was certified by several cross evidences including scan emission microscopy, atomic force microscopy, Raman spectroscopy, X-ray photoelectron spectroscopy, and thermogravimetric analysis. Circular dichroism spectra proved that the chiral information was introduced through the grafted single-handed helical polymer chains successfully. In addition, the resulting GO/polymer composites were explored as a chiral additive to induce enantioselective crystallization of racemic organic molecules. Preferential formation of rod-like L-alanine crystals was induced by composites bearing right-handed helical poly(phenyl isocyanide)s. The enantiomeric excess value of the induced crystals reached 76%, displaying the potential in future applications. © 2017 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2017, 55, 2092–2103

Flamvelutpenoids A–D (1–4), four new cuparene-type sesquiterpenes, were isolated from the solid culture of Flammulina velutipes. Their structures were elucidated by NMR experiments. The absolute configurations of 1 and 2 were assigned via the circular dichroism data of the [Rh2(OCOCF3)4] complex, whereas that of C(3) of 3 was determined by applying the octant rule for the α,β-unsaturated ketone moiety. Compounds 1–4 showed weak antibacterial activity against Escherichia coli, Bacillus subtilis, and methicillin-resistant Staphylococcus aureus with MIC values larger than 100 μM.

Optimized conditions are developed for the DBU mediated carboxylation of terminal alkynes with supercritical CO2 to form the corresponding propiolic acids.