The present invention provides a hydrolysis method for tert-butyl ester in gadolinium-based contrast agent. The hydrolysis method comprises the step of hydrolyzing the tert-butyl ester with a catalyst. The preparation method of the catalyst comprises the following steps: subjecting zirconia and ...
tert.-butylhydroperoxide 103-71-9 phenyl isocyanate 20666-88-0 phenyl-peroxycarbamic acid tert-butyl ester Conditions ConditionsYield With copper acetylacetonate In tetrachloromethane at 20℃; for 1h; Product distribution; Mechanism; 99% With copper acetylacetonate In benzene at 30℃; for ...
(tert-Butoxycarbonyl)phenylalanine; 6: PN: RU2506269 PAGE: 13 claimed sequence; Alanine, N-carboxy-3-phenyl-, N-tert-butyl ester, L-; Alanine,N-carboxy-3-phenyl-, N-tert-butyl ester, L- (8CI); BOC-L-Phenylalanine; BOC-L-Phe-OH; Boc-Phe-OH; L-Phenylalanine, N-[(1,1-di...
K Kishore, JA Sattigeri, S Sethi - US Patent 7, 671 - www.google.com 2,2-dimethyl-{11 -aryloxy-alkanoic acids and salts and esters thereof. Apr 7, 1970, Feb 13, 1973,Sumitomo Chem Co Ltd,Ja, Phenoxy carboxylic acid derivative. US3781328, Sep 7, 1972, Dec25, 1973, Boehringer ...
ChemInform Abstract: TEMPERATURE DEPENDENCE OF ACTIVATION PARAMETERS IN THE NEUTRAL ESTER HYDROLYSIS IN TERT-BUTYL ALCOHOL-WATER SOLUTIONSesterification, ester hydrolysisdoi:10.1002/chin.198402124KANERVAL. TChemischer Informationsdienst
Fig. 7: Tentative mechanism. Possible reaction pathway of the carbonylative coupling reaction. Full size image Discussion In summary, nickel-catalyzed allylic carbonylative coupling with alkyl zinc reagent has been developed for the synthesis of β,γ-unsaturated ketones from allylic acetate and alkyl ...
The present invention provides a hydrolysis method of tert-butyl ester used in a gadolinium contrast agent. The hydrolysis method comprises the following steps: hydrolyzing the tert-butyl ester by using a catalyst; a preparation method for the catalyst comprising the following steps: performing a ...
A process for the selective enzymatic hydrolysis of tert-butyl esters of peptide substrates C terminals in the synthesis of peptides, comprising hydrolysing one or more peptide substrates comprising C tert-butyl esters using the protease subtilisin terminals in any suitable form.BOERIU, CARMEN, G....
Cleavage of tert-Butyl Benzoates with NaH in DMF: Comments on the \\u00adMechanism and a Simple and Safe Alternative Proceduretert-butyl esterscleavagehydridesDMFhazardSODIUM HYDRIDEESTERSHYDROLYSISThe hazardous and inconvenient Schmidt procedure for TERT-butyl benzoate ester cleavage by NaH in DMF has...
A hydrolysis method for tert-butyl ester in gadolinium-based contrast agent comprises hydrolyzing the tert-butyl ester with a catalyst. The preparation method of the catalyst comprises the following steps: subjecting zirconia and titanium tetrachloride to reaction in the presence of sulfuric acid and ...