Table 1.
Intramolecular coupling optimization to access C2-substituted BCPs.
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Yield determined by GC analysis with trimethoxybenzene as an internal standard.
Yield in parenthesis is the isolated yield. rt, room temperature; Mes, mesityl; cPr, cyclopropyl; Ts, tosyl; Trisyl, triisopropylbenzenesulfonyl; DMF, N,N-dimethylformamide.