反应详情

A solution of DIBAL-H (179 mL, 1M) was added to a solution of the product from step (i) (26.4 g) in THF (400 ml) at rt. The mixture was stirred for 3 h then a further 0 ml of DIBAL-H was added and stirred for a further 1 h. The mixture was quenched carefully with EtOAc and then with 2M aq HCl. The mixture was partitioned between ether/2M HCl, the organics were separated, washed with water, dried and evaporated under reduced pressure. The residue was triturated with isohexane and filtered to give the subtitle compound as a solid, 21 g.

1. stirringstirred for a further 1 h
2. customThe mixture was quenched carefully with EtOAc
3. customThe mixture was partitioned between ether/2M HCl
4. customthe organics were separated
5. washwashed with water
6. customdried
7. customevaporated under reduced pressure
8. customThe residue was triturated with isohexane
9. filtrationfiltered