4442-79-9Relevant articles and documents
A METHOD FOR PRODUCING VINYLCYCLOALKANES COMPOUNDS
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Paragraph 0047; 0049, (2021/07/13)
The present invention relates to a method for producing vinylcycloalkanes compounds represented by the general formula (5) highly selectively and economically, which comprises hydrogenation and dehydration. Hydrogenation step: hydrogenating the compounds represented by the general formula (1) or/and (2) or/and (3) or/and (4) with hydrogen to prepare the corresponding primary or secondary alcohols in the presence of hydrogenation catalyst with min. 0.1 part by wight. Dehydration step: dehydrating the corresponding primary or secondary alcohols prepared by the above-mentioned hydrogenation step to prepare vinylcycloalkanes compounds represented by the general formula (5) in the presence of dehydration catalyst. R 1 -CH2-CH2-OH (1) Wherein R 1 of the general formula (1)~(4) is hydrocarbyl (hydrocarbon functional group) having aromatic rings. R 2 -CH=CH2(5) Wherein R 2 of the general formula (5) is cycloalkyl or cycloalkyl-substituted alkyl.
HYDROGENATION OF CARBONYLS WITH TETRADENTATE PNNP LIGAND RUTHENIUM COMPLEXES
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Page/Page column 27; 35, (2019/10/04)
The present invention relates to catalytic hydrogenation processes, using Ru complexes with tetradentate ligands of formula L in hydrogenation processes for the reduction of ketone, aldehyde, ester or lactone into the corresponding alcohol or diol respectively. The described processes use a ruthenium complex of the formula (1) as defined below, and where the ligand (L) is defined by the Markush formula shown above.
Carbon chain shape selectivity by the mouse olfactory receptor OR-I7
Liu, Min Ting,Ho, Jianghai,Liu, Jason Karl,Purakait, Radhanath,Morzan, Uriel N.,Ahmed, Lucky,Batista, Victor S.,Matsunami, Hiroaki,Ryan, Kevin
supporting information, p. 2541 - 2548 (2018/04/12)
The rodent OR-I7 is an olfactory receptor exemplar activated by aliphatic aldehydes such as octanal. Normal alkanals shorter than heptanal bind OR-I7 without activating it and hence function as antagonists in vitro. We report a series of aldehydes designed to probe the structural requirements for aliphatic ligand chains too short to meet the minimum approximate 6.9 ? length requirement for receptor activation. Experiments using recombinant mouse OR-I7 expressed in heterologous cells show that in the context of short aldehyde antagonists, OR-I7 prefers binding aliphatic chains without branches, though a single methyl on carbon-3 is permitted. The receptor can accommodate a surprisingly large number of carbons (e.g. ten in adamantyl) as long as the carbons are part of a conformationally constrained ring system. A rhodopsin-based homology model of mouse OR-I7 docked with the new antagonists suggests that small alkyl branches on the alkyl chain sterically interfere with the hydrophobic residues lining the binding site, but branch carbons can be accommodated when tied back into a compact ring system like the adamantyl and bicyclo[2.2.2]octyl systems.
