After reiewing the issues raised in the petition, FDA determined that its standards for approal of the generic drug application for bupropion are appropriate.
Keto-enol tautomerizing of ethyl acetoacetate was studied by UV.It was conformed that the content of enol ethyl acetoacetate decreased with the increasing polarity of solvents.
This paper uses orthogonal experiment to research on the synthesis technique of pseudo-ally lionone from citral and allylacetone. The product structure had analysed by IR.
Camphor trees contain camphanone, whose chief conponent is camphor.The water insolubility of camphor limits its application as a raw material for production "of green" pesticides.
The invention is applied to the catalytic reactions such as aromatic ketone unsymmetrical hydrogen transfer reaction and can achieve very high yield and enantiotropic selectivity.
The syntheses of two new derivatives of 4 - pyrone, by the reaction of adipyl choloride with enamines deriving from chain ketones and aldehydes, are described.