How is 1,1',1''-Methanetriyltribenzene (CAS: 519-73-3) typically synthesized?

1,1',1''-Methanetriyltribenzene (CAS: 519-73-3) can be synthesized through a Friedel-Crafts alkylation reaction using benzene as the starting material. The reaction involves the use of aluminum chloride as a catalyst. Typically, the yields are in the range of 70-80%, and the selectivity is high due to the sterically hindered nature of the benzene ring system.