Oil-in-oil emulsions are ideal systems for water-sensitive reactions such as polymerizations and catalytic reactions, which has received extensive attention in recent years. The application of oil-in-oil emulsions has been developed slowly due to the limited types of surfactants and complicated ...
The microwave spectrum of 3-methyl-2-cyclopenten-1-one has been recorded from 18.0 to 26.5 GHz. Both a-type and c-type R-branch transitions in the ground state and the three vibrationally excited states of the ring-bending mode have been assigned. The ground state rotational constants are determ...
The oxidation of N-[1-Methyl-2:3-dihydroxy-cyclopenten(2)-ylidene(4)] piperidinium betaine(I) was investigated using electrochemical methods. The betaine was observed to be oxidised in an irreversible two-electron process to give fragmentation products. The major product resulted from the attack...
Among other products, 4,5-dihydroxy-2-α-D-glucopyranosyloxy-5-methyl-2-cyclopenten-1-one is formed in warming an aqueous solution of piperidinomaltulose.
(R)- and (S)-3-methyl-2-cyclopenten-1-ol are prepared from 3-methyl-2-cyclopentenone with high enantiomeric purity (>95 %) through a 4-step sequence involving the enantioselective enzymatic esterification of 2-bromo-3-methyl-2-cyclopenten-1-ol with lipase PS and vinyl acetate.
The resolution of (R,S)-4-hydroxy-3-methyl-2-(2-propenyl)-2-cyclopenten-1-one ((R,S)-HMPC) was studied using ionic liquids or vinyl acetate as the reaction medium. The effects of the reaction medium, water activity, temperature, pH value, and the cosolvent on the resolution were studied. The res...
A toxicologic and dermatologic review of 3-methyl-5-(2,2,3-trimethyl-3-cyclopenten-1-yl)pent-3-en-2-one when used as a fragrance ingredient is presented. 3-Methyl-5-(2,2,3-trimethyl-3-cyclopenten-1-yl)pent-3-en-2-one is a member of the fragrance structural group Alkyl Cyclic Ketones. These fragr...
A toxicologic and dermatologic review of 3-methyl-2-(pentyloxy)-2-cyclopenten-1-one when used as a fragrance ingredient is presented. 3-Methyl-2-(pentyloxy)-2-cyclopenten-1-one is a member of the fragrance structural group ketones cyclopentanones and cyclopentenones. The common characteristic st...
A toxicologic and dermatologic review of 3-methyl-2-(n-pentanyl)-2-cyclopenten-1-one when used as a fragrance ingredient is presented. 3-methyl-2-(n-pentanyl)-2-cyclopenten-1-one is a member of the fragrance structural group ketones cyclopentanones and cyclopentenones. The common characteristic ...
A toxicologic and dermatologic review of 3-methyl-2-(2-pentenyl)-2-cyclopenten-1-one when used as a fragrance ingredient is presented. 3-methyl-2-(2-pentenyl)-2-cyclopenten-1-one is a member of the fragrance structural group ketones cyclopentanones and cyclopentenones. The common characteristic ...
The gas-phase hydrogenation and deuteration of 2-methylcyclopentanone and 2-methylcyclohexanone into the corresponding cis- and trans-2-methylcyclanols, are investigated on various metal catalysts, using a microreactor pulse technique.In the range of temperatures considered (80 ° to 160 °C), a...
The rotational spectra of 2-methylcyclopentanone in the ground and six vibrationally excited states have been observed in the frequency region from 26.5 to 40.0 GHz. The obtained rotational parameters are consistent with a twisted ring conformation in which the methyl group is in the equatorial ...
This chapter reviews salient reports published in the 1996–2005 decade, dealing with structural characteristics, spectroscopic properties, thermodynamic behavior, and reactivity behavior of six-membered heterocycles containing nitrogen, oxygen, and sulfur – dioxazines, oxathiazines, and dithia...
A facile efficient synthesis of novel 3-aryl-5,6-dihydro-1,4,2-oxathiazin-6-ols from the reaction of (E)-N-hydroxyarylimidoyl chlorides and 1,4-dithiane-2,5-diol in the presence of triethylamine is described. This transformation presumably proceeds via in situ generation of 2-mercaptoacetaldehyd...
A series of functionalized poly(2-oxazoline)s were synthesized by quenching poly(2-methyl-2-oxazoline) living chains (mono- or bifunctional) with maleic acid as nucleophilic agent. By varying the functionality of the initiating system and the ratio of the nucleophile to oxazolinium ends, three d...
A novel polydopamine-graft-poly(2-methyl-2-oxazoline) (PDA-g-PMOXA) coating was prepared by immobilizing poly(2-methyl-2-oxazoline) (PMOXA) onto material surfaces through polydopamine (PDA) anchored coating for the first time. And then, the chemical composition, hydrophilicity, and protein-resis...
Poly(2-methyl-2-oxazoline) (PMeOZO) with pyrrole end groups was synthesized by cationic ring polymerization of 2-methyl-2-oxazoline initiated by benzyl bromide and subsequent modification of the halide end group. The structure and electroactivity of the macromonomer thus obtained were confirmed ...
Neutral amphiphilic triblock ABA copolymers are of great interest to solubilize hydrophobic drugs. We reported that a triblock ABA copolymer consisting of methyl-2-oxazoline (MeOx) and tetrahydrofuran (THF) (MeOx6-THF19-MeOx6) (TBCP2) can solubilize curcumin (Cur) a very hydrophobic molecule exh...
We report on the synthesis and solution properties of novel fluorine-containing copolymers. Our synthetic approach provides an easy way to attach a CnF2n+1 perfluorinated terminal chain to a poly(2-methyl-2-oxazoline)–block–poly(2-octyl-2-oxazoline) copolymer and to combine hydrophilic, hydrop...
In this work, a one-step coating procedure by a simple annealing protocol of poly (2-methyl-2-oxazoline)-random-glycidyl methacrylate (PMOXA-r-GMA) copolymer was used to yield covalent and cross-linked PMOXA-based antifouling coating on a fused-silica capillary inner surface, which was used to d...
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