[ All air or moisture-sensitive reactions were performed in a dry reaction vessel under argon atmosphere. Air or moisture-sensitive liquids and solutions were transferred with syringe or Teflon cannula. The water content of solvents was confirmed to be less than 30 ppm by Karl-Fischer 5 titration performed with MKC-210 (Kyoto Electronics Manufacturing Co., Ltd.). Analytical thinlayer chromatography (TLC) was performed with a glass plate coated with 0.25mm 230-400 mesh silica gel containing a fluorescent indicator. Organic solutions were evacuated with a diaphragm pump a rotary evaporator. Flash column chromatography was performed as described using either Kanto Chemical silica gel 60N as described by Still et al. 10 High-resolution mass spectra (HRMS) were taken with LCMS-IT-TOF (Shimadzu Co.) using reserpine (MW 608.2734) as an internal standard. Nuclear magnetic resonance (NMR) spectra were taken with ECZ-500 (JEOL, Ltd.) at room temperature unless otherwise noted and reported in parts per million (ppm). 1 H NMR spectra were internally referenced to tetramethylsilane (0.00 ppm), CHCl3 (7.26 ppm), CHDCl2 (5.32 ppm), C2HDCl4 (5.97 ppm), or (CHD2)(CD3)SO (2.50 15 ppm). C NMR spectra were internally referenced to tetramethylsilane (0.0 ppm), CDCl3 (77.0 ppm), CD2Cl2 (53.8 ppm), C2D2Cl4 (73.8 ppm), or (CD3)2SO (39.5 ppm). F NMR spectra were internally referenced to C6H5F (-113.2 ppm).