Fig. 5: Gram-scale synthesis and derivatizations.

a Turnover number test and gram-scale synthesis. b Derivatizations of 2a. S/C, substrate/catalyst; DEAD, Diethyl azodicarboxylate.

a Turnover number test and gram-scale synthesis. b Derivatizations of 2a. S/C, substrate/catalyst; DEAD, Diethyl azodicarboxylate.