... The Journal of Organic ... Cl 2 . The organic layers were combined and 1 M HCl was added (20 mL) and extracted 2× with CH 2 Cl 2 . The organic layers were ... solvent was evaporated in vacuo yielding a colorless oil (1.32 g, 91%): 1 H NMR (300 MHz, CDCl 3 ) δ 7.16 (td, J = 9.1, 5 ...