In an article, author is Camp, Andrew M., once mentioned the application of 1116-77-4, Name is 4,4-Diethoxy-N,N-dimethyl-1-butanamine, molecular formula is C10H23NO2, molecular weight is 189.3, MDL number is MFCD00671479, category is ethers-buliding-blocks. Now introduce a scientific discovery about this category, Formula: C10H23NO2.
Selecting Double Bond Positions with a Single Cation-Responsive Iridium Olefin Isomerization Catalyst
The catalytic transposition of double bonds holds promise as an ideal route to alkenes of value as fragrances, commodity chemicals, and pharmaceuticals; yet, selective access to specific isomers is a challenge, normally requiring independent development of different catalysts for different products. In this work, a single cation-responsive iridium catalyst selectively produces either of two different internal alkene isomers. In the absence of salts, a single positional isomerization of 1-butene derivatives furnishes 2-alkenes with exceptional regioselectivity and stereoselectivity. The same catalyst, in the presence of Na+, mediates two positional isomerizations to produce 3-alkenes. The synthesis of new iridium pincer-crown ether catalysts based on an aza-18-crown-6 ether proved instrumental in achieving cation-controlled selectivity. Experimental and computational studies guided the development of a mechanistic model that explains the observed selectivity for various functionalized 1-butenes, providing insight into strategies for catalyst development based on noncovalent modifications.
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