Alcohols ethenyl

Ethenediyl) bis(5-(4-(ethylamino)-6-(phenylamino)-1,3,5-triazin-2-yl) amino) benzenesulfonic acid, disodium salt. See Disodium bisethylphenyl triaminotriazine stilbenedisulfonate Ethene, homopolymer. See Polyethylene Ethene, homopolymer, oxidized. See Polyethylene, oxidized Ethene oxide. See Ethylene oxide Ethene polymer. See Polyethylene Ethenol homopolymer. See Polyvinyl alcohol Ethenyl acetate, homopolymer. See Polyvinyl acetate Ethenylbenzenesulfonic acid, sodium salt, homopolymer 4-Ethenylbenzene-sulfonic acid sodium salt, homopolymer. See Sodium polystyrene sulfonate 1-Ethenyl-2-pyrrolidinone. See N-Vinyl-2-pyrrolidone l-Ethenyl-2-pyrrolidinone homopolymer. See PVP... 

The reaction of the enamines of cyclohexanones with a,ft-unsaluraled sulfones gives mixtures resulting from attack of the enamine at the a- and /(-carbons of the oc,/ -unsaturated sulfone. The ratio of x- and /1-adducts is dependent upon the reaction solvent, the geometry and structure of the sulfone1 4. The diastereoselectivity of these reactions is also poor. The reaction of lithium enolates of cyclic ketones with ( )-[2-(methylsulfonyl)ethenyl]benzene, however, gives bicyclic alcohols, as single diastereomers, that result from initial -attack on the oc,/ -unsaturated sulfone5. 

Benzyl alcohol, a-vinyl- [Benzene-methanol, a-ethenyl-), 106 Bcnzylamine-polystyrene [Benzene, di-ethenyl-, polymer with ethenyl-benzene, aminomethylated), 95 Benzyl bromide [Benzene, (bromo-methyl)-, 78... 

C-NMR spectroscopic studies on a-substituted tris(ethynyl)methyl cations 49 prepared from alcohols 50 (equation 18) provided evidence for the participation of resonance structures with allenyl cationic character38. The parent tris(ethenyl)methyl cation (49, R = H) cannot be generated under stable carbocation conditions (SbFs/FSOsH) presumably due to the highly reactive unsubstituted termini of the three ethynyl groups and the resulting low kinetic stability. The chemical shift data (Table 1) give evidence that in all cases Ca and CY are deshielded more than Cg (relative to their precursor alcohols). 

Brown and Suzuki have shown that treatment of trialkylboranes with ethenyl-(Scheme 42, Eq. 42a) and ethynyloxiranes (Scheme 42, Eq. 42b) in the presence of a catalytic amount of oxygen, affords the corresponding allylic or allenic alcohols. The mechanism may involve the addition of alkyl radicals to the unsaturated system leading to l-(oxiranyl)alkyl and l-(oxiranyl)alkenyl radicals followed by rapid fragmentation to give alkoxyl radicals that finally complete the chain process by reacting with the trialkylborane [104-106]. 

N-Benzoyl meroquinene tert-butyl ester 4-Piperidineacetic acid, 1-benzoyl-3-ethenyl-, 1,1-dimethylethyl ester, (3R-cis)- (9) (52346-13-1) tert-Butyl alcohol (8) 2-Propanol, 2-methyl- (9) (75-65-0)... 

S)-Pinanediol boronic esters 2 with (dichloromethyl)lithium produce (aS)-a-chloro boronic esters 3. The first experiments provided diastereomerie ratios in the range 75 25 to 98 2. The best results (>94 6) were obtained with phenyl, ethenyl, or 1-phenylethyl attached to the boron atom39 40. The diastereomerie ratios were estimated from the rotations of esters of derived secondary alcohols. It was subsequently found that zinc chloride catalysis of the rearrangement of the intermediate borate complexes 2 improved the yields, usually to 85-95%, with diastereo-meric ratios often >99 1 when R1 = alkyl, as shown by NMR measurements15,43. 

In the essential oil, apart from cuminaldehyde, perilla aldehyde (4-(l-methyl-ethenyl)-l-cyclohexene-l-carboxaldehyde), cumin alcohol or 4-isopropylbenzyl alcohol, a-pinene and /3-pinene (21%), dipentene, p-cymene, /3-phellandrene and limonene (Fig. 11.1) have been reported by Baser et al. (1992). 

Solubility determinations were used to characterize the polymorphism of 3-(((3-(2-(7-chloro-2-quinolinyl)-( )-ethenyl)-phenyl)-((3-dimethylamino-3-oxopropyl)-thio)-methyl)-thio)-propanoic acid. " The solubility of Form II was found to be higher than that of Form I in both isopropyl alcohol (IPA, solubility ratio equal to 1.7 over the range of 5-55°C) and methyl ethyl ketone (MEK, solubility ratio equal to 1.9 over the range of 5-55°C), indicating that Form I is the thermodynamically... 

In a second investigation, racemic 2-hydroxy-4-phenylbutanoic acid (42) was reacted with lipase PS (LPS) and vinyl acetate (VA) (ethenyl ethanoate) in /-butyl methyl ether (2-methoxy-2-methylpropane) to give acetate (S)-43 in 35% yield and in 99% ee unreacted alcohol 44 was found to have 99% ee with R configuration predominant (Scheme 3.3). 

A very comprehensive and critical review on the Stille reaction covering the literature up to 1995 appeared recently [94 a]. Although the Stille reaction can take place in the presence of many useful functional groups (e.g. alcohol, ester, nitro, acetal, ketone, and aldehyde [94,124 b]), it does not seem to be favored over the Suzuki or Kumada coupling for formation of biaryls, presumably because of the lower yields sometimes obtained in the Stille procedure [124]. In general, the Stille procedure is far more often applied for the introduction of other unsaturated groups (e.g. ethenyl, allyl, alkynyl) into aromatic systems than for aryl and... 

Pyroxylic spirit. See Methyl alcohol Pyroxylin Pyroxylin plastic Pyroxylin rods. See Nitrocellulose 2-Pyrrolidinone a-Pyrrolidinone. See 2-Pyrrolldone 2-Pyrrolidinone, 1-cyclohexyl-. See N-Cyclohexyl pyrrolldone 2-Pyrrolidinone, 1-dodecyl-. See Lauryl pyrrolldone 2-Pyrrolidinone, 1-ethenyl-, polymer with ethenylbenzene 2-Pyrrolidinone, 1-vinyl-, polymer with styrene. See Styrene/PVP copolymer Pyrrolldone. See 2-Pyrrolldone... 

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