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.
The conformational studies in solution and in the solid state of substituted 6‐methyl‐4‐hydroxy‐2‐pyrones indicated that the substituents on the 4‐hydroxy group clearly favored the s‐cis arrangement towards the formal double bond. Steady state kinetic NOE measurements of the tert‐butyl, trimethylsilyl and the trimethylstannyl derivatives showed a marked preference for this conformation in solution...
The reaction of anhydrous HCl (g) with trimethyl phosphane oxide yields trimethylhydroxy phosphonium chloride. A crystal structure analysis showed that the prevalent mesomeric structure in the solid state is the phosphonium chloride ion pair. Ab initio calculations in the gas phase cannot reproduce these findings, whereas higher correlated methods (CISD) and solvation models predict the experimental...
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.