Sodium Hydroxide → HCID 90411028, compound

Participants

Reaction Steps

To a solution of 32 (1.9 g, 3.38 mmol) in 20 ml of THF was added 6 ml of 1 M TBAF in THF. After being kept at room temperature for 2 hrs the reaction was diluted with methanol (100 ml), water (100 ml) and treated with 10 ml of 1 M NaOH. The reaction was allowed to proceed overnight, then combined with 10 g of Dowex 66 and 20 g of Dowex 50 w×8×200 and stirred for 1 h. The resin was removed by filtration, washed with 50% methanol and the combined filtrates concentated to afford 0.6 g (77%) of 33 as a white solid. This material contained some impurities but was considered to be pure enough for further use without additional purification.

Provenance & Evidence