Synthesis and ring transformation of novel tetracyclic fused as-triazines
摘要:
Eight new tetracyclic fused as-triazines (4 - 6, 8, 11 - 13, and 15) have been synthesized by conversion and subsequent ring transformation of 1,2-diaminoisoquinolinium (2) and -quinolinium salts (9) with 4-benzoyl-5-phenylfuran-2,3-dione (1). Selective alkylations of the new products revealed that these reactions are governed mainly by the electronic density of the lone pairs as well as by steric effects.
Synthesis and ring transformation of novel tetracyclic fused as-triazines
摘要:
Eight new tetracyclic fused as-triazines (4 - 6, 8, 11 - 13, and 15) have been synthesized by conversion and subsequent ring transformation of 1,2-diaminoisoquinolinium (2) and -quinolinium salts (9) with 4-benzoyl-5-phenylfuran-2,3-dione (1). Selective alkylations of the new products revealed that these reactions are governed mainly by the electronic density of the lone pairs as well as by steric effects.