(untitled) - Octa-Smolin, F; van der Vight, F; Yadav, R; Bhangu, J; Soloviova, K; Wolper, C; Daniliuc, C G; Strassert, C A; Somnitz, H; Jansen, G; Niemeyer, J (J. Org. Chem., 2018)
We found that HCl-mediated deprotection of compounds 18d/e can lead to undesired 5-endo-dig cyclization, which can be avoided by using TMSBr; see: