Conformational Studies of <i>N</i><sub>3</sub>-Substituted [1,3,4]-Oxadiazinan-2-ones
作者:David M. Casper、Jennifer R. Blackburn、Christopher D. Maroules、Tana Brady、Joel M. Esken、Gregory M. Ferrence、Jean M. Standard、Shawn R. Hitchcock
DOI:10.1021/jo020322g
日期:2002.12.1
conformational changes that are observable by (13)CNMR spectroscopy. The conformational properties of new [1,3,4]-oxadiazinan-2-one derivatives 2d-k are examined by X-ray crystallography and variable-temperature (13)CNMR spectroscopy and further evaluated by semiempirical AM1 calculations. The collected data reveal that the conformational changes of the overall ringsystem are dependent upon the stereoelectronic