JORGENSEN K A. Catalytic asymmetric hetero-diels-alder reactions of carbonyl compounds and imines [J]. Angewandte Chemie International Edition, 2000.3558-3588.
[4]
FERRARIS J P, COWAN D O, WALATKA V. Electron transfer in a new highly conducting donor-acceptor complex [J]. Journal of the American Chemical Society, 1973.948-949.