Benzophenone, 98%
Methanol, commercial
Sodium borohydride , commercial 

Methanol (900 mL), Benzophenone (182 g, 1 mole) is added to a 2 l, 3 necked flask carrying mechanical stirrer, addition flask. A solution of sodiumborohydride (10.0 g, 0.26 mol) in 25 ml of 0.5 M sodium hydroxide (500 mg NaOH in 25 ml water) was freshly prepared and charged to the addition flask. The temperature of methanolic solution of benzophenone is raised to about 35oC. Aqueous solution of sodiumborohydride added slowly over a period of 1 h. After complete addition, the temperature was raised to 55 oC and maintained for 30 min and further refluxed for 1h. At this point TLC shows almost complete conversion of benzophenone to benzhydrol (TLC comparison is very difficult by UV even 0.5% benzophenone looks like more than 5% because of high UV activity of benzophenone compared to benzhydrol). Methanol was completely removed by reduced pressure. To the, residue was added water (500mL)+ toluene (1000 mL, or other organic solvents) . The pH of the medium was adjusted to about 5-6 with dilute acetic acid (~ 5 mL). The organic layer was washed with water twice (250 mL x 2). Toluene was completely removed under reduced pressure to get 175 g of pure benzhydrol which solidifies on cooling (yield: 95%, repeated extraction of water will improve the yield further).

1H NMR (300 MHz): 7.50-7.20 (m, 10H), 5.83 (s, 1H), 2.20 (s,OH)

13C NMR (75 MHz): 142.00, 128.25, 127.30, 127.12, 79.92