Dissolve alcohol in PrOH (14 ml). Add TEA (0.95 ml, 6.9 mmol) and 6-chloro-9-(tetrahydropyran-2-yl)purine (1.64 g) to the reaction mixture. Heat the reaction mixture at 45 °C for 6 hours. Cool the reaction mixture. Filter the mixture. Evaporate the filtrate partly. Purify the filtrate by CC (60.3 g of silica gel, mobile phase CHCl3-Me2CO 4:1, flow rate 7.5 ml/min). The product is a light yellow viscous substance that starts to crystallize after two weeks of drying over P2O5 in a vacuum desiccator.
Figure Preparation of N-Benzyl-9-(tetrahydro-2H-pyran-2-yl)adenine