9 20 1h bs 3 u2014 nh 13 c nmr 75 mhz cdcl 3 u03b4 41 6 2 u2032 ch 2 55 7 och 3 63 5 5 u2032 ch 2 71 9 3 u2032 ch 85 5 4 u2032 ch 86 5 1 u2032 ch 87 8 ar 3 c 102 7 5 ch 113 8 ar u2014 ch 127 7 ar u2014 ch 128 5 ar u2014 ch 128 8 ar u2014 ch 130 8 ar u2014 ch 135 1 ar u2014 c 140 6 6 ch 144 1 ar u2014 c 144 3 ar u2014 c 150 8 2 c 159 3 ar u2014 c 163 7 4 c hrms es found m na 523 1848 c 29 h 28 n 2 o 6 na requires 523 1845 ir kbr 3208 3054 1714 1694 1682 1507 1470 1250 1092 1035 759 cm u2212 1 anal calcd for c 29 h 28 n 2 o 6 1 43 hcl 0 40 h 2 o c 62 21 h 5 44 n 5 00 cl 9 06 found c 62 17 h 5 05 n 4 85 cl 8 86 4 cyanotrityl 0 397 g 1 31 mmol was added to a solution of 2 u2032 deoxyuridine 0 229 g 1 00 mmol in dry pyridine 5 ml as the reaction was not complete after 72 h.