Ethenyl ethyl

Case Study of Tetrahydro-1,4-Oxazine (Morpholine). As in the case of aromatic pollutants, the oxidation of the N atom and the C atoms was observed with or without the destruction of the morpholine cycle (92). Also, the abstraction of H atoms to form methyl groups was illustrated by the formation of A-hydroxyamino-2-ethenyl ethyl ether, /V-formyl-formamine, and acetate ions. When the starting morpholine concentration was increased, intermediate products with mass peaks much greater than the molecular mass of morpholine were detected, showing that coupling reactions occurred the concentrations of these intermediates were very low. 

Cyclobutanol IV/4, 110 Cyclopropan 1 -Hydroxy-1 -methyl-XIIl/2a, 460, 462 E17a, 301 (R - COOR + TiX4/R - MgX) Ether Ethenyl-ethyl- Vl/ld, 147ff. Furan Tetrahydro- Vl/lb, 611 f. (Jeger-Reakt.) VI/3, 529/536 (Cyclokond.)... 

Phosphinsaure (2-Chlorcarbonyl-ethenyl)-ethyl- -chlorid E2, 157 (H5C2-PC12 +... 

S)-( )-Benzyliden-(2-hydroxy-1-isopropyl-ethyl)- E21b, 1837 (NH2 - N = CH — Ar) (l-Ethoxy-ethenyl)-ethyl-phenyl-VII/4, 430 Aminoxid... 

Sliskovic, D.R., Picard, J.A., Roark, W.H., Roth, B.D., Ferguson, F., Krause, B.R., Newton, R.S., Sekerke, C., and Shaw, M.K., Inhibitors of cholesterol biosynthesis. Part 4. 7 ran.v-6-[2-(substituted-quinolinyl)ethenyl/ethyl lclrahydro-4 hydroxy-2//-pyran-2-ones, a novel series of HMG-CoA reductase inhibitors, 7. Med. Chem., 34, 367, 1991. 

The interaction of an ethenyl ether and a trialkyl phosphite (trimethyl phosphite was actually used) under dry acid conditions (HCl gas in MeOH) leads to a phosphonic diester according to Scheme 2. Little dealkylation of the phosphite triester appears to occur, and the reaction appears therefore not to involve addition of dialkyl hydrogenphosphonate (the product of phosphite dealkylation), all the more so since triphenylphosphine also reacts under the same conditions to give related triphenylphosphonium salts. Ethenyl ethyl ether, 2,3-dihydrofuran and 2,3-dihydropyran were used as substratesThe ease of reaction under mild conditions, coupled with high yields, testifies to the importance of a cationic intermediate species. 

Vilsmeier-Haack formylation of 2-(4-methyl-l-piperazinyl)-4//-pyrido-[l,2-n]pyrimidin-4-one with a mixture of POCI3 and DMF at 95°C gave a 3-formyl derivative (93FES1225) while ethyl 4-oxo-6,7,8, 9-tetrahydro-4//-pyrido[l,2-n]pyrimidine-2-acetate at 50 °C yielded a 9-dimethylaminomethylene-3-formyl derivative (01MI4). 3-Formyl-2-hydroxy-8-[2-(4-isopropyl-l,3-thiazol-2-yl)-l-ethenyl]-4//-pyrido[l,2-n]pyri-midin-4-one was obtained from the 3-unsubstituted derivative with oxalyl chloride-DMF reagent in CH2CI2 at room temperature for 3h (OlMIPl). 

A merocyanine dye, l-ethyl-4-(2-(4-hydroxyphenyl)ethenyl)pyridinium bromide (M-Mc, 2), exhibits a large spectral change according to the acid-base equilibrium [40, 41]. The equilibrium is affected by the local electrostatic potential and the polarity of the microenvironment around the dye. Hence, this dye is useful as a sensitive optical probe for the interfacial potential and polarity when it is covalently attached to the polyelectrolyte backbone. 

Mesitylene [Benzene, 1,3,5-tnmethyl-], 86 Z Met Gly Gly OEt [Gly cine,V-[Ar-[A-[(phenylmethoxy)carbonyl] -L-methionyl] glycyl] -, ethyl ester], 9 3 Methane, iodo-, hazard note 127 Methyl chlonde polystyrene [Benzene, diethenyl-, polymer with ethenyl-benzene, chloromcthylatcd], 96 Methyl iodide [Methane, iodo-], 79 Methyl mercaptan [Methanethiol], 73 Moffat oxidation, 99... 

C2oH fiClNO 149968-10-5) see Montelukast sodium [tx5-( )]-3-[2-(7-chloro-2-quinolinyl)ethenyl]-a-[2-[2-(l-methyl-l-[(tetrahydro-2//-pyran-2-yl)oxy]ethyl]phenyll-ethyl]benzenemethanol methanesulfonate (ester) (CjjHjgClNOjS 162489-71-6) see Montelukast sodium (5)-a-[3-[(E)-2-(7-chloro-2-quinolinyI)ethenyl]phenyl]-2-(l-hydroxy-l-methylethyl)benzenepropanol (C2i,H2xClN02) see Montelukast sodium (5)-a-[3-[( )-2-(7-chloro-2-quinolinyl)ethenyl]phenyl]-2-(l-hydroxy-l-methylethyl)benzenepropanol methanesulfonate... 

As a typical example of topochemically prepared polymers, the nmr speetrum of the polymer derived from ethyl 4-[2-(2-pyrazyl)ethenyl]-cinnamate [l OEt] crystals by reaction (2), and the X-ray diffraction patterns of the same monomer and polymer are illustrated in Figs 1 and 2 (Hasegawa et al., 1989a). 

Ethyl a-cyano-4-[2-(2-pyridyl)ethenyl]cinnamate (7 OEt) also crystallizes with /3-centrosymmetric-type packing yielding photoreactive crystals and, upon photoirradiation (>410 nm), is converted into the /3-hetero-type dimer (7 OEt-dimer) nearly quantitatively. The 7 OEt-dimer (space group PT, triclinic) has the structure which is predicted from the crystal structure of 7 OEt (space group PT, triclinic). 

Ethyl 4-[2-(4-pyridyl)ethenyl]cinnamate (5 OEt) crystals (j8-type packing) gives an optically active dimer through a topochemical [2-1-2] photocycloaddition (enantiomeric effect >90%). The asymmetric induction is ex-... 

Figure 12.8 Pyrogram of Regalrez 1094. Peak assignments 1, cyclohexane 2, cyclohexene 3, ethenyl cyclohexane 4, ethyl cyclohexane 5, ethylidene cyclohexane 6, 1 methylethyl cyclohexane 7, 1 methylethyl cyclohexene 8, 1 methylethylidene cyclohexane 9, 1,1 dimethylethyl cyclohexane 10, 1,2 propadienyl cyclohexane...

Te-Li exchange in bis(2-arylethenyl)tellurides (run 15). To a solution of bis-[2-(p-tolyl) ethenyl] telluride (0.361 g, 1 mmol) in THE (4 mL) at -78°C under nitrogen, a solution of n-BuLi (0.91 mL, 2.1 mmol, 2.42 M solution in hexane) was added dropwise. After 20 min of stirring at this temperature, DMF (0.2 mL, 2.58 mmol) was added. The temperature was raised to room temperature and stirred for 1 h, then diluted with ethyl acetate (30 mL) and washed with water (3x10 mL). The organic layer was separated, dried with MgS04 and the solvent removed under vacuum. Elution with hexane removed dibutyl telluride, and elution with ethyl acetate gave a low-m.p. solid. Yield 0.175 g, 60% (characterized as the semi-carbazone m.p. 108.4-109.4°C). 

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