Condensed isoquinolines. Part 9. Alkylation of 7,12-dihydro-5H-isoquino[2,3-a]quinazolin-5-ones was written by Kisel, V. M.;Potikha, L. M.;Kovtunenko, V. A.. And the article was included in Chemistry of Heterocyclic Compounds (New York)(Translation of Khimiya Geterotsiklicheskikh Soedinenii) in 2000.Safety of 3-(Bromomethyl)benzoic acid This article mentions the following:
The alkylation of 7,12-dihydro-5H-isoquino[2,3-a]quinazolin-5-one proceeds at N(6) or C(7) depending on the type of alkylating agent and reaction conditions. C(7)-alkylation occurs in the presence of base. The secondary alkylation of the 7-alkyl derivatives occurs at the same position under these conditions. Depending on the conditions, the reaction with ortho-xylylene dibromide leads to spiro[5H-isoquino-[2,3-a]quinazolin-7(12H),2′-indane]-5-one or 11-oxo-4b,5,10,16-tetrahydro-11H-10a-azonia-15b-azadibenzo[a,e]pleiadene bromide. In the experiment, the researchers used many compounds, for example, 3-(Bromomethyl)benzoic acid (cas: 6515-58-8Safety of 3-(Bromomethyl)benzoic acid).
3-(Bromomethyl)benzoic acid (cas: 6515-58-8) belongs to organobromine compounds. Bromine is more electronegative than carbon (2.9 vs 2.5). Consequently, the carbon in a carbon–bromine bond is electrophilic, i.e. alkyl bromides are alkylating agents. When the molecular ion is detected, the bromine and chlorine isotope patterns are very distinct, but caution is to be exercised for certain mixed chlorinated/brominated compounds, which can look similar to homohalogen patterns.Safety of 3-(Bromomethyl)benzoic acid
Referemce:
Bromide – Wikipedia,
bromide – Wiktionary