Guided desaturation of unactivated aliphatics
نویسندگان
چکیده
منابع مشابه
Guided Desaturation of Unactivated Aliphatics
The excision of hydrogen from an aliphatic carbon chain to produce an isolated olefin (desaturation) without overoxidation is one of the most impressive and powerful biosynthetic transformations for which there are no simple and mild laboratory substitutes. The versatility of olefins and the range of reactions they undergo are unsurpassed in functional group space. Thus, the conversion of a rel...
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a problem of computer vision applications is to detect regions of interest under dif- ferent imaging conditions. the state-of-the-art maximally stable extremal regions (mser) detects affine covariant regions by applying all possible thresholds on the input image, and through three main steps including: 1) making a component tree of extremal regions’ evolution (enumeration), 2) obtaining region ...
Hydromethylation of Unactivated Olefins
A solution to the classic unsolved problem of olefin hydromethylation is presented. This highly chemoselective method can tolerate labile and reactive chemical functionalities and uses a simple set of reagents. An array of olefins, including mono-, di-, and trisubstituted olefins, are all smoothly hydromethylated. This mild protocol can be used to simplify the synthesis of a specific target or ...
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Photosynthesizing flax, soybean, and safflower plants were exposed to 14CO2 at seed-setting stage for a 1 hr period. Seed was sampled periodically thereafter and the lipids were extracted. A triglyceride-rich fraction was methanolyzed ; the resultant methyl esters were analyzed by gas-liquid chromatography and assayed for radioactivity. Of the ClS unsaturated acids, oleic was the first to acqui...
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We present nucleophilic aromatic substitution of unsubstituted aryl chlorides via a mechanism that is catalytic in [CpRu(p-cymene)]PF6 and involves a Ru(η(6)-arylchloride) intermediate. From the spectroscopic evidence we infer that arene exchange is the rate limiting step in this process and develop several new Ru(ii) complexes that lower the activation barrier to arene exchange.
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ژورنال
عنوان ژورنال: Nature Chemistry
سال: 2012
ISSN: 1755-4330,1755-4349
DOI: 10.1038/nchem.1385