Answers are grounded in this paper and cite their sources.
Alkylation of 3,4-dihydro-β-carboline has been accomplished with organo-copper and -lithium reagents by activation of BF3·OEt2 or trimethylsilyl trifluoromethanesulphonate.
No takes yet. Share an insight, caveat, or question.
Nakagawa et al. (1990) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: