(3,5-difluorophenyl)hydrazine

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: 14.0 g (97 mmol) of the compound of Example I and 27.95 g (97 mmol) of 4-chloro-N-(4-oxo-cyclohexyl)-benzenesulphonamide are refluxed for 5 hours in 190 ml of ethanol and 36 ml of concentrated sulphuric acid, then the mixture is cooled and diluted with 300 ml of water. The mixture is extracted 4 times using 250 ml of ethyl acetate each time, and the organic phase is dried using sodium sulphate, filtered with suction over kieselguhr and evaporated. The residue is stirred with methylene chloride and dried in a high vacuum. The mixture is extracted 4 times the organic phase is dried filtered with suction over kieselguhr evaporated dried in a high vacuum

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: 14.0 g (97 mmol) of the compound of Example I and 27.95 g (97 mmol) of 4-chloro-N-(4-oxo-cyclohexyl)benzenesulphonamide are refluxed for 5 hours in 190 ml of ethanol and 36 ml of concentrated sulphuric acid, then the mixture is cooled and diluted with 300 ml of water. The mixture is extracted 4 times using 250 ml of ethyl acetate each time, and the organic phase is dried using sodium sulphate, filtered with suction over kieselguhr and evaporated. The residue is stirred with methylene chloride and dried in a high vacuum. The mixture is extracted 4 times the organic phase is dried filtered with suction over kieselguhr evaporated dried in a high vacuum

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: The compound was prepared from (8S,9S,10R,11S,13S,14S,17R)-11-hydroxy-10,13-dimethyl-3-oxo-1,2,3,6,7,8,9,10,11,12,13,14,15,16-tetradecahydrodispiro[cyclopenta[a]phenanthrene-17,4′-[1,3]dioxolane-5′,4″[1,3]dioxolane]-2-carbaldehyde and (3,5-difluorophenyl)hydrazine according to the procedure for Intermediate 50. APCI-MS m/z: 541 [MH+].