Analysis of DOM in the western and eastern parts of the lake revealed that aerobic degradation led to a decrease in CHOS and aliphatic compounds, alongside an increase in CHO and highly unsaturated and phenolic compounds. Furthermore, we unveiled the characteristics and sources of heterogeneity in ...
photo- and biodegraded. The definition of “marine” molecular formulae was therefore not only tied to marine bioproduction, but also DOM age and degradation state. In line with this observation, IDEG, as well as relative abundances of highly unsaturated compounds, were elevated in terrestrial and...
Finally, twogem-difluoromethylene-containing analogs of actual drug compounds were prepared using the here presented methodology. Aripiprazole is an antipsychotic drug, ranking 128th among the top 200 retail drugs in 2019 with annual sales >1.2 billion dollars73. In a straightforward manner the O–...
Although some reports argued that unsaturated bonds in graphene can probably be reduced in a hydrogen atmosphere34, our Raman spectra (Figure s1) reveal that the graphene structure in the catalysts is not damaged because the reaction conditions used in this work are relatively mild. GC-MS (...
A solid surface comprises (i) a crosslinked acrylic or unsaturated polyester resin present in an amount no greater than 51 or 52 volume fraction percent, and (ii) no greater than 48
1. A process for the production of a reaction product of a polyepoxide and an α,β-monoolefinically unsaturated carboxylic acid, wherein at least 60% of the epoxide groups of a polyepoxide with more than one 1,2-epoxide group per molecule are reacted ...
a series of atoms linked successively by covalent bonds to form one or more rings. This cycle can be saturated or unsaturated and this cycle can be a heterocycle. Preferably, the cyclic or aromatic organic compound is an aromatic compound. That is to say, it has at least one aromatic ...
It is important to note that during the complexation of 3b with [Cu(ClO4)2], the Cu2+ ions were reduced to Cu+ by both the phenolic OH and the amines of the β-amino α,β-unsaturated ketones. Furthermore, control compounds 6 and 9b were synthesized to clarify the possible binding ...
et al. Synthesis of the EF-ring segment of ciguatoxin CTX1B based on novel regioselective reduction of unsaturated cyanohydrins and ring- closing olefin metathesis. Tetrahedron 61, 7392–7419 (2005). 50. Dolson, M. G., Jackson, D. K. & Swenton, J. S. Anodic oxidation as a general ...
(entry 12). In comparison, an unsaturated aldehyde, such as cinnamaldehyde, exhibits better reactivity (entry 13). The replacement of the furan ring with a thiophene ring leads to a slightly lower yield of hydrogenated products, while the pyridine ring results in a much lower product yield (...