Potassium Fluoride → HCID 131727340, compound

Participants

Reaction Steps

Racemic (2′R,3R,4′S)-1′-(tert-butoxycarbonyl)-6-chloro-4′-(3-chlorophenyl)-2′-isopropenyl-2,6′-dioxospiro[indole-3,3′-piperidine]-1-carboxylic acid tert-butyl ester (100 mg, 1.6 mmol) prepared in Example 226a, catalytic amount of KF and a large amount of trimethylsilyl fluorosulfonyldifluoroacetate was dissolved in toluene (1 mL). Then the reaction tube was placed into the cavity of a focused monomode microwave reactor and the contents of the flask were irradiated at 115° C. for 30 min. The solution was concentrated and the residue was purified by Prep-TLC (CH2Cl2:CH3OH=30:1) to obtain title compound (2.6 mg) of Example 226d and (4.1 mg) of the title compound.

Provenance & Evidence