The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
A solid supported glycineimine t-butyl ester was designed and successfully applied to the synthesis of (±)-α-amino acids. The phase-transfer catalytic alkylation, followed by acidic hydrolysis and benzoylation gave N-benzoyl-α-amino acid tert-butyl esters in high yields (up to 92%).
Practical synthesis of (+/-)-α-alkylserines and tert-butyl benzamidoacrylate from tert-butyl 2-phenyl-2-oxazoline-4-carboxylate (6) were developed. The α-alkylation and β-elimination of 6 are dramatically dependent upon base conditions. The phase-transfer catalytic condition bearing solid KOH in toluene gives α-alkylation (up to >99%), and t-BuOK in DMF gives β-elimination (98%).
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.