Polar and steric substituent constants for an alkylperoxy group and related ether groups 来自 Semantic Scholar 喜欢 0 阅读量: 29 作者:WH Richardson,RS Smith,G Snyder,B Anderson,GL Kranz 摘要: Rates of acid-catalyzed esterification were measured for 2-tert-butylperoxy-2-methylpropanoic acid (1a)...
Substituenteneffekte auf die C – C-Bindungsstrke, 11. Thermolyse von Tetraalkylpinacoldimethyletherndoi:10.1002/cber.1993126042412-Dialkoxyethanestetraalkyl-Strain and structureThermolysiskinetics ofRadicalsstability ofEffects of Substituents on the Strength of CC Bonds, 11[1]. – Thermolysis of ...
Next, we examined the substrate scope of alkyl arylborons as shown in Fig.3. Methyl phenylboronic acids provided the corresponding aldehydophenylboronic acids in high yields (6a–6c). The position of the methyl substituent seems to have no influence on the product yield. Notably, multimethyl-s...
134Citations Metrics Abstract Substituted alkenes are pivotal structural motifs found in pharmaceuticals and agrochemicals. Although numerous methods have been developed to construct substituted alkenes, a generally efficient, mild, catalytic platform for the conversion of alkynes to this highly functionalized...
This confirmed that the steric bulkiness of C5 substituent is favored to maintain inhibitory activity against HIV-1 replication. 2.3. In vitro anti-HIV-1 activity of I-11 and I-12 Based on the results of the first round of screening, we performed further antiviral activity evaluation of I-...
Advantageously when R1 or R2 is H, the other substituent on the cathecol group is different from H. Preferably R1 and R2 are both different from H. A first group of more preferred compounds of general formula (II) is that in which: R1 and R2 are as defined above; Z is (CH2)n ...
MeO N OMe O LDA 82% MeO N OMe OH LiAlH4, Et2O 0 oC to reflux MeO NH2 OH + MeO NH2 OH Z-hydroximate 53 Z-hydroxyoxime ether 54 erythro-55 MeO O HN O and OH MeO O HN O OH 1. O3 2. NaBH4 78-0 ºC (±)-cytoxazone-1 (88%) (±)-4-epi-cytoxazone-59 (95%...
(Kiesel-gel® 60, 230-400 mesh, E. Merck, W. Germany). Elution is conducted with 2 l of petroleum ether. The eluate is concentrated under reduced pressure. The concentrate is subjected to distillation under reduced pressure to give 311 g of 1-chloro-2-methylpropyl 3-methylbutyrate as ...
Thermal properties of novel oligoether-substituted ionic liquids and the influence of alkyl-substituent isomery - ScienceDirectIonic liquidsIsobaric molar heat capacityThermal stabilityStructure-property relationshipMathematical gnosticsThis paper is a continuation of study focused on thermodynamic properties of ...
Petroleum ether (boiling range: 160-190°) — — 94% — The solutions are suitable for use in the form of microdrops. Example F3 Granules a) b) c) d) Active ingredient 5% 10% 8% 21% Kaolin 94% — 79% 54% Highly disperse silica 1% — 13% 7% Attapulgite — 90...