In organic chemistry, atoms other than carbon and hydrogen are generally referred to as heteroatoms. The most common heteroatoms are nitrogen, oxygen and sulfur. Now I present to you an article called Synthesis of indolo[1,2-f]phenanthridines by Pd-catalyzed domino C-N coupling/hydroamination/C-H arylation reactions, published in 2015, which mentions a compound: 58656-04-5, mainly applied to indolophenanthridine preparation; palladium catalyst domino coupling hydroamination arylation, Application of 58656-04-5.
A new and convenient method for the synthesis of indolo[1,2-f]phenanthridines via palladium-catalyzed domino C-N coupling/hydroamination/C-H arylation reactions was developed. The reactions allow for the synthesis of various phenanthridines in good yields from easily accessible starting materials using a single palladium catalyst. E.g., in presence of Pd(OAc)2 and Xantphos, reaction of 2-BrC6H4CCPh and 2-BrC6H4NH2 gave 70% indolo[1,2-f]phenanthridine (I).
Different reactions of this compound(Tricyclohexylphosphonium tetrafluoroborate)Application of 58656-04-5 require different conditions, so the reaction conditions are very important.
Reference:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem