Inorganic Chemistry, Vol.55, No.9, 4075-4077, 2016
Regioselective Synthesis and Crystallographic Characterization of Isoxazoline-Ring-Fused Derivatives of Sc3N@I-h-C-80 and C-60
Highly regioselective 1,3-dipolar cycloaddition of 3,5-dichloro-2,4,6-trimethoxybenzonitrile oxide (1) to Sc3N@I-h-C-80 or C-60 affords the corresponding isoxazoline-ring-fused derivatives Sc3N@I-h-C-80(C10H9O4NCl2) (2a) and C-60(C10H9O4NCl2) (2b). 2a represents the first example of an endohedral metallofullerene derivative with an isoxazoline ring. Crystallographic and NMR spectroscopic studies reveal a [5,6]-bond addition pattern in 2a but a [6,6]-bond addition manner in 2b.