2,4-Difluoronitrobenzene → HCID 58421665, compound

Participants

Reaction Steps

63 ml LiHMDS (1 M in THF) were added dropwise to a stirred solution of 10 g 1,4-dioxa-spiro[4.5]decan-8-ol in THF (60 ml) at 0° C. and the reaction stirred for 30 min. A solution of 2,4-difluor-1-nitro-benzene in THF (20 ml) was than added over 5 min and the reaction warmed to rt and stirred for 16 h. The reaction was quenched with sat. ammonium chloride solution and adjusted to pH 7 with 2N HCl. The solvent was removed under vacuum and the residue portioned between EtOAc (200 ml) and water (100 ml). The organic layer was separated and the aqueous phase washed with EtOAc (2×50 ml). The combined organic phases were washed with brine (50 ml) and separated. The organic phase was evaporated to give a solid that was used without further purification.

Provenance & Evidence