[1]. Junji Itoh, et al. Chiral phosphoric acid catalyzed enantioselective Friedel-Crafts alkylation of indoles with nitroalkenes: cooperative effect of 3 A molecular sieves. Angew Chem Int Ed Engl. 28;47(21):416-8.
H32-H315-H319-H335
P261-P264-P27-P271-P28-P32+P352-P34+P34-P33-P362+P364-P45-P51
GHS7