... Contribution from the Department of Chemistry and The Skaggs Institute for Chemical Biology, The Scripps Research Institute, 10550 North Torrey Pines ... h; ii, 2 M HCl; iii, N 2 H 4 ·H 2 O, EtOH, 78 °C, 24 h. (b) P 4 S 10 , xylene, 140 °C, 18 h. (c) M n + (OAc) n or M n + Cl n , H 2 ...