The kinetics of PTC-Wittig reaction between substitutedaromatic aldehydes and 2-butenyl methyldiphenylphosphonium salthas been studied. The low reaction constan
The ZnCl<sub>2</sub>-catalyzed condensation reaction of ferrocenealdehyde and indole in the solid state gave a new product (di-3-indolyi)-methylferrocene(3). The cr
The acylation of 3-pentanone enamine was studied and a novelformation of 4-pyrones from β-diketone enol esters was found involvingan intramolecular O- to C-acy
New methods for dehydrogenation of steroidal 2,5(10)-dienes with2,3-dichloro-5,6-dicyano-1,4-benzoquinone (DDQ) or pyridinium hydrobromideperbromide(PHP,Py·HBr&
A research on the application of a TG-DTA(thermal gravimetryaifferential thermal analysis)to the quick determination of moisture,organic volatilefixed carbon,as
A new vitamin B<sub>12</sub> coenzyme analogue 2’,5’-dideoxyuridinyicobalamin and two other 2’,5’-dideoxynucleosidecobalamins of adenosyl-and thymidyl-were