نتایج جستجو برای: polyα olefin
تعداد نتایج: 2960 فیلتر نتایج به سال:
[reaction: see text] Peptide [2]- and [3]rotaxanes are assembled in high yields under thermodynamic control using hydrogen bonding interactions and reversible cross olefin metathesis.
B ulk petrochemical manufacturing is a highly competitive global industry. When margins are tight, manufacturers seek ways to optimize performance and to reduce costs while maximizing yields and revenue. Optimization options include alternative feeds, plant/process revamps and improved operations to achieve better separation and yields to lower energy consumption, to minimize product loss and t...
Naturally occurring polyhydroxylated amines such as (+)-1-deoxynojirimycin, polyoxamic acid, anisomycin, (-)swainsonine, and alexine stereoisomers, which have interesting biological activities including glucosidase- and mannosidase-inhibitory activity, immunoregulatory activity, and antibacterial effects, were synthesized stereoselectively starting from (S)-pyroglutamic acid derivatives. α,β-Un...
Carbon monoxide (CO) is an important building block in industrial organic chemistry. Organic substrates containing a carbon-carbon unsaturation may undergo an addition of CO, normally resulting in the formation of a new carbon-carbon sequence, where one carbon atom is provided by carbon monoxide, the other ones originating from the unsaturated substrate, e.g. an olefin or an acetylenic derivati...
We have succeeded in preparing Au/Pd core-shell nanoparticles in apo-ferritin and improving the catalytic reactivity of olefin hydrogenation relative to Pd0 nanoparticles in the cage.
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