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Beilstein J. Org. Chem. 2013, 9, 1093–1101, doi:10.3762/bjoc.9.121
Graphical Abstract
Scheme 1: Complementary guanidinium sulfonate 1 and guanidinium–sulfonimide ion pairs 2 and 3.
Scheme 2: Synthesis of the potassium sulfonimides 6a and 6b.
Scheme 3: Synthesis of guanidinium sulfonimides 2a,b, 3a,b and iodides 7∙I, 8∙I.
Figure 1: DSC traces of compound 3b (heating/cooling rate 10 K min−1).
Figure 2: Compound 3b under crossed polarizers upon cooling from the isotropic melt (200-fold magnification)....
Figure 3: (a) WAXS diffraction pattern of 3b at 59.5 °C (vertical magnetic field director); (b) temperature-d...