Linderic acid

Linderic acid, physical properties, 5 31t Linde sieve tray, 23 338 Lind, James, 25 746-747 Linear geometry, for metal coordination numbers, 7 574, 575t Linear 1-olefins, properties of, 17 711t Linear acceleration, exponents of... 

Lindera obtusiloba Blume f. villosa (Blume) Kitag. Nei Don Zi (bark) Campesterol, linderol, capric acid, lauric acid, myristic acid, linderic acid, dodecen-4-oic acid, oleic acid, tetradecen-4-oic acid, tsudzuic acid, linoleic acid.48 Reduce swelling, pain. 

Linderalactone Linderene Linderic acid Linderol Linderoxide Lindestrene Lindestreolide Linoleic acid... 

Linder acid-catalyzed conditions, this same benzoyl derivative rearranges, presumably via a ring-opened intermediate, to a thiochromene (Eq. 1) Thiochromenes are also derived from the action of a Grignard reagent on a dihydrothiocoumarin (Scheme 23). 

I.2.3. Hydrolysis with Ring Opening Linder Acidic Conditions... 

Lauryl sulfate, see D-00286 Lesquerolic acid, in H-00303 Leukotriene 4, in E-00007 Leukotriene B4, L-OOOl 1 Leukotriene B4, in L-OOOl 1 14,15-Lcukotriene 44, in E-00009 Leukotriene B, in L-OOOl 1 Lichesterol, in M-00013 Lichesterylic acid, see M-00094 Lignoccrane, see T-00004 Lignoceric acid, see T-00007 Lignoceryl alcohol, see T-00008 Linderic acid, in D-00260... 

Linderic Acid i-Dodecenoic acid, i-unde-cylene-l-carboxylic acid)... 

In 2001, Linder and Podlech studied the microwave-assisted decomposition of diazoketones derived from a-amino acids [340]. In the presence of imines, the initially formed ketene intermediates reacted spontaneously by [2+2] cydoaddition to form /3-lactams with a trans substitution pattern at positions C-3 and C-4 (Scheme 6.179) [340], In order to avoid the use of the high-boiling solvent 1,2-dichlorobenzene, most transformations were carried out in 1,2-dimethoxyethane under sealed-vessel conditions. Solvent-free protocols, in which the substrates were adsorbed onto an inorganic alumina support, led only to the corresponding homologated /3-amino acids. Evidently, traces of water present on the support trapped the intermediate ketene. 

Methoxy-2 -methylbiphenyl. o-Tolylboronic acid, 10.0 g (73.6 mmol) (Note 1), 16.8 g (71.8 mmol) of 4-iodoanisole (Note 2), and 200 mL of acetone (Note 3) are combined in a 1-L, three-necked flask equipped with an efficient stirbar, two stoppers, and a reflux condenser attached to a gas-flow adapter with a stopcock. Potassium carbonate, 25.0 g (0.180 mol), is dissolved in 200 mL of water (Note 4) in a separate 250-mL Schlenk flask. In a third flask (25-mL Schlenk flask) 3.30 mg (0.02 mmol, 0.2%) of palladium acetate (Note 5) is dissolved in 10 mL of acetone. All three flasks are then thoroughly degassed by four freeze-pump-thaw cycles. Linder an argon back flow, one of the stoppers on the three-necked flask is replaced with a rubber septum, and the carbonate and catalyst solutions are added via cannula to form a biphasic mixture. The top layer turns brown upon addition of the catalyst. The septum is... 

Separation of diastereoisomeric peptides by HPLC is more common. Since each diastereo-isomer has different physicochemical and biological properties, this is of great interest. Separations of diastereoiosomeric di- and tripeptides have usually been performed on reversed-phase columns. Cahill et al. (119) separated diastereoisomeric amino acids and derivatized dipeptides using esters of the /V-hydroxysuccinamide of f-butyl carbonyl-L-amino acid on Cl8 and C8 columns. Linder et al. (120) separated amino acid and peptide derivatives on an RP-C8 column, adding a metal chelate. Mixtures of DL and LD-dipeptides can be separated by RP-HPLC into two peaks, one containing LL- and DD-isomers, the other containing LD and DL-isomers. Sep-... 

Linder, P.W. and Murray, K. (1987) Statistical determination of the molecular structure and the metal binding sites offulvic acids. Sci. Total Environ., 64, 149-161. 

Murray, K. and Linder, P.W. (1983) Fulvic acids structure and metal binding. I. A random molecular model./. Soil Sci., 34, 511-523. 

Woolard CD, Linder PW. 1999. Modelling of the cation binding properties of fulvic acids an extension of the random algorithm to include nitrogen and sulphur donor sites. Sci Tot Environ 226 35-46. 

In the first step the base (usually an alkoxide, LDA, or NaH) deprotonates the a-proton of the ester to generate an ester enolate that will serve as the nucleophile in the reaction. Next, the enolate attacks the carbonyl group of the other ester (or acyl halide or anhydride) to form a tetrahedral intermediate, which breaks down in the third step by ejecting a leaving group (alkoxide or halide). Since it is adjacent to two carbonyls, the a-proton in the product p-keto ester is more acidic than in the precursor ester. Linder the basic reaction conditions this proton is removed to give rise to a resonance stabilized anion, which is much less reactive than the ester enolate generated in the first step. Therefore, the p-keto ester product does not react further. 

The mechanism of the Mukaiyama aldol reaction largely depends on the reaction conditions, substrates, and Lewis acids. Linder the classical conditions, where TiCl4 is used in equimolar quantities, it was shown that the Lewis acid activates the aldehyde component by coordination followed by rapid carbon-carbon bond formation. Silyl transfer may occur in an intra- or intermolecular fashion. The stereochemical outcome of the reaction is generally explained by the open transition state model, and it is based on steric- and dipolar effects. " For Z-enol silanes, transition states A, D, and F are close in energy. When substituent R is small and R is large, transition state A is the most favored and it leads to the formation of the anf/-diastereomer. In contrast, when R is bulky and R is small, transition state D is favored giving the syn-diastereomer as the major product. When the aldehyde is capable of chelation, the reaction yields the syn product, presumably via transition state h. ... 

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