18 C 6 12.0107 H 1 1.00794 Al 13 26.9815386 B 4 10.811 Br 35 79.904 Ca 20 40.078 Cl 17 35.453 F 9 18.9984032 I 53 126.90447 K 19 39.0983 Li 3 6.941 Mg 12 24.3050 N 7 14.0067 Na 11 22.98976928 O 8 15.99940 P 15 30.973762 S 16 32.065 Si 14 28.0855 15 BOC C5H9O2 Boc C5H9O2 CBZ C8H7O2 Cbz C8H7O2 TBDMS C6H15Si THP C5H9O1 TMS C3H9Si MEM C4H9O2 Me CH3 Et C2H5 Pr C3H7 Bu C4H9 Ph C6H5 Bn C7H7 Ac C2H3O 12 none C0 MeOH MeOH EtOH EtOH PrOH PrOH AcOEt AcOEt CHCl3 CHCl3 CH2Cl2 CH2Cl2 AcOH AcOH CF3COOH CF3COOH MeCN MeCN DMF HCONMe2 HCl HCl modified Tue Mar 16 23:11:56 2010