Methyl angelate

The hydrogenation of the esters methyl tiglate, methyl trifluorotiglate, and methyl angelate occurred slowly over 1% Pd/SiOa at room temperature and 10 bar pressure. Modification of the catalyst by cinchonidine or cinchonine induced no enantioselectivity under any conditions Typical results are given in Table 2. 

Sokol RZ Health Research Association, Inc., Los Angeles, CA Pb exposure in utero may induce an inherited change in DNA methylation patterns in Pb exposed pups, the mechanism by which Pb exposure during the critical time of sexual differentiation induces reproductive axis abnormalities in adulthood National Institute of Environmental Health Sciences... 

Methyl-cis-2-butenoic (angelic) acid, physical properties, 5 35t Methylclothiazide, molecular formula and structure, 5 162t Methylcobalamin, 25 804 Methylcyclohexanediamine, physical properties of, 2 500t... 

Glucosyl(l 6)(4" -caffeoylglucoside) 7-Glucoside-4 -(Z-2-methyl-2-butenoate) (7-gluco side-4 -angelate)... 

FIGURE 9.47 Distribution of 2-niethyl (i iso) and 3-methyl (a anteiso) alkanes measured in (a) cigarette smoke, (b) particles from abrasion of leaves typical of the Los Angeles area, and (c) annual average concentrations measured in three locations in southern California in 1982 (adapted from Rogge et al., 1994). 

Loker Hydrocarbon Research Institute and Department of Chemistry, University of Southern California, Los Angeles, CA 90089-1661, USA Fax 213-740-6679 e-mail OLAH METHYL USC EDU... 

Amyl bromides, b322, b323 Amyl chloride, cl91 Amyl iodide, i47 Amyl mercaptan, p35 Amyl methyl ketone, hi 5 Anethole, m97 Angelic acid, ml62... 

Tiglic acid is the E isomer, and the Z isomer is known as angelic acid. The higher ranked substituents, methyl and carboxyl, are placed on opposite sides of the double bond in tiglic acid and on the same side in angelic acid. 

Recent studies suggest all N-methyl-D-aspartate (NMDA) antagonists cause brain damage to the portions of the brain responsible for higher cognitive functions like memory and speech. These are the areas most affected by dissociative anesthetics and include ketamine, dextromethorphan (DXM), phencyclidine (PCP or angel dust), nitrous oxide (whippets), and dizocilpine (MK-801). 

Angell, Y.M., Garcia-Echeverria, C., and Rich, D.H. (1994) Comparative studies of the coupling of N-methylated sterically hindered amino acids during solid-phase peptide synthesis. Tetrahedron Lett. 35, 5891-5894. 

SME from five different sources SME-A, B and C were obtained from the ADEPT Group (Los Angeles, CA), SME-D from the National Biodiesel Board (Jefferson City, MO) and SME-E directly from its producer Methyl oleate (99+%) was from Nu Chek Prep (Elysian, MN). 

Figure 2.3 TgScaled Arrhenius plot showing data for molten salts ZnCl2 and calcium potassium nitrate (CKN), with data for the calcium nitrate hydrate (CaNOs-W ) and the tetrafluoroborates of quaternary ammonium (MOMNM2E, M= methyl, E = ethyl) and 1-n-butyl-3-methyl-imidazolium (BMI) cations, and the bis-oxalatoborate (BOB) of the latter cation, in relation to other liquids of varying fragility (from Xu, Cooper, and Angell [15]).

Frankel, E. N., Emken, E. A., Itatani, H., Bailar, J. C., Jr., Homogeneous Hydrogenation of Methyl Linolenate Catalyzed by Platinum-Tin Complexes, presented before the American Oil Chemists Society, Los Angeles, Calif., April 24-27, 1966. 

Two pairs of higher acids of this series are known, the members of each pair being related to each other as are crotonic and iso-crotonic acids. The first two are known as tiglic acid and angelic acid and they have been proven to be the alpha-methyl substitution products of the two crotonic acids. Tiglic acid is a-methyl crotonic acid and is therefore the cis form. Angelic acid is a-methyl iso-crotonic acid and is the trans form. 

P14-8b The degree of backmixing in a tall slurry reactor was analyzed by injecting a pulse of methyl orange into the column (presented at the AIChE Los Angeles meeting, November 1982). For a superficial gas velocity of 10 cm/s and a liquid velocity of 3 cm/s ... 

A careful study of several taxa of Lantana camara has resulted in the isolation of 22/S-hydroxy-3-oxo-olean-12-en-28-oic acid (101), 22/8-dimethylacryloyloxy-3/3-hydroxyolean-12-en-28-oic acid (102), 24-hydroxy-3-oxo-olean-12-en-28-oic acid (103), and a mixture of the dimethylacrylate (104) and angelate (105) of 22(3-hydroxylantanolic acid. Other workers have also obtained (104) from L. camara and have called it lantanilic acid. A possible alternative structure for lantanolic acid (106) with the potential ketone at C-2 has been excluded on chemical grounds by converting it into the acetal of oleanonic acid methyl ester. 

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