aAn example is the use of [3-(triphenylphosphonium)propanesulfonic acid][tosylate] in the formation of ethyl ethanoate [43]. 例子是用途(3 (triphenylphosphonium) propanesulfonic酸) (tosylate)在乙基ethanoate (43的)形成。 [translate] 英语翻译 日语翻译 韩语翻译 德语翻译 法语翻译 俄语翻译 阿拉伯语翻译 ...
Methyl [2(5H)-furanylidene]ethanoateCyclisation/dehydration cascadeSodio-lithio dianion enolateThe polyketide secondary metabolites spongosoritin A and gracilioethers A–C contain a unique methyl [2(5H)-furanylidene]ethanoate core. A synthetic model of a suspected biosynthetic intermediate to these ...
Interactive 3D chemistry animations of diazonium salt formation reaction mechanism for students studying University courses
Click the structures and reaction arrows in sequence to view the 3D models and animations respectively Reaction of carbonyl with hydrazinegives a hydrazone. Hydrazine is more nucleophilic than a regular amine due to the presence of the adjacent nitrogen. Note the similarity to theformation of an ox...
The photochemistry of 1-(3,5-dimethoxyphenyl)-2-(4-methoxyphenyl)ethyl ethanoate was investigated in methanol and 2,2,2-trifluoroethanol (TFE). Following photolysis of this ester in either solvent, two ether products were obtained: one resulting from trapping of the cation formed directly by ...
The reaction of arenealdehyde 4-phenylthiosemicarbazones la–f with dimethyl ethynedicarboxylate (6) gave methyl[3-aryl-4-oxo-1-(phenylthiocarbamoyl)-4,5-dihydro-1H-pyrazol-5-ylidenelethanoates 10a–f in 73-79% yield, while, byreaction with diethyl (E)-2,3-dicyanobutenedioate (7), ...
The effect of trichloroethanoate and other carboxylate ions on the formation of tris(2,4-pentanediono)chromium(III), Cr(acac) 3, has been investigated. It has been found that some carboxylate ions labilize the reaction while others deactivate it. The synthesis of Cr(acac) 3 in the presence...
Interactive 3D animation of oxime formation from hydroxylamine and an aldehyde for students studying University chemistry courses
The initial step has to be protonation of the formaldehyde so it can react with the amine. The formation of the iminium ion can be reversed if water is added to the final product. The processes would occur in the same way but in the reverse order. ...
The kinetics of formation of tris(2,4-pentanediono)chromium(III), Cr(acac) 3, in the absence and presence of trichlorethanoate, TCE, and other carboxylate ions has been studied. The TCE ion was found to have the strongest labilizing effect on the reaction while the oxalate ion had the...