Esters, olefination

C H2 OH>2 CHN02 (liq)+C H 3 COOHQiq) - (CH200CCH3)2CHN02 0iq), 3) selective oxidation to a mono ester olefin using mild conditions such as dil aq KMn04 ... 

The homogeneous hydrogenation of soybean oil methyl ester Olefin disproportionation... 

Several aspects are particularly noteworthy. Good chemoselectivity is noted in the compatibility with epoxides, esters, olefins, and alcohols. Entries 44 and 45 demonstrate the chemoselectivity between an unsaturated and saturated ketone. 

The self-immolative 1,3-chirality transfer from C-5 to C-3 the simple diastereoselection observed in the connection of C-2 with C-3 which results from the enol ester olefin geometry and the chair-like transition state of the [3.3]-sigmatropic rearrangement. 

See Section 362 (Ester-Olefin) for the formation of enol ethers and Section 367 (Ether-Olefins) for the formation of enol ethers. May of the methods in Section 60A (Protection of Aldehydes) are also applicable to ketones. q... 

Ketones, aldehydes, ethers, tertiary amines, esters, olefins H2O, alcohols, carboxylic acids, primary and secondary amines Saturated hydrocarbons,... 

If two of the three monomers belong to the group described above and one is weakly conjugated, i.e. of the group of vinyl chloride, vinyl esters, olefins and the like, the product probabilities are approximately 0.006. It is evident that knowledge of the product probabilities permits to predict relative reactivity ratios for a wide variety of monomers. 

Grell, W., and Machleidt, H., Syntheses with organophosphorus compounds. Part 1. Ester olefinations, Justus Liebigs Ann. Chem., 693, 134, 1966. 

Gas chromatographic studies of ethers, ketones, alcohols, esters, olefins, and alkanes, using columns with liquid phases containing P-diketonate complexes in squalane, revealed that the more nucleophilic organic substrates reacted more strongly with the P-diketonates than the less basic ones. Er complexes of fluorinated P-diketones (especially 3-trifluoroacetyl-d-camphor-ate, facam) reacted more strongly with these nucleophiles than did similar non-fluorinated Er complexes. The retention time of THE increased exponentially with the inverse of metal ionic radius in the facam chelates of a variety... 

Di-iododimethylsilane appears to be an effective reagent for the mild deoxygenation of a-arylalkanols to the corresponding hydrocarbon. Aliphatic alcohol methanesulphonates are selectively reduced in good yield by an electrochemical method. The reaction is performed in a divided cell with a lead cathode and a platinum anode in dry DMF containing tetraethylammonium toluene-p-sulphonate. Yields are in the range 57—87%, and groups such as esters, olefins, nitriles, and even epoxides are inert under these conditions. ... 

N,N-dimethylchloromethylenammonium chloride is a highly chemoselective agent for carboxylic acid reduction. It selectively activate the carboxylic acid and is known to tolerate active functionalities such as ketone as well as the moderate ester, olefin, nitrile and halide moeties. 

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