Simple amino silyl ether organocatalyst for asymmetric hetero Diels–Alder reaction of isatins with enones

Perumalsamy Parasuraman, Divakar Ganesan, Zubeda Begum, Chigusa Seki, Yuko Okuyama, Eunsang Kwon, Koji Uwai, Michio Tokiwa, Suguru Tokiwa, Mitsuhiro Takeshita, Hiroto Nakano