2-(4-bromophenoxy)-2-methylpropanoyl chloride

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

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

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

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: 1-(2-(4-Bromophenoxy)-2-methylpropanoyl)-4-methylpiperazine was prepared in accordance to the procedure described in Example 29(a) from 2-(4-bromophenoxy)-2-methylpropanoyl chloride and 1-methylpiperazine (5.3 mL, 17.5 mmol). This compound (2.37 g, 6.95 mmol) was dissolved in Et2O and HCl in dioxane (4M, 2.26 mL) was added dropwise with stirring. The precipitate was filtered off and dried to yield the sub-title compound (2.5 g, 95%). The precipitate was filtered off dried

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

Procedure: Pyrrolidine (1.54 g, 21.6 mmol) in anhydrous MeCN (10 mL) was added with stirring to 2-(4-bromophenoxy)-2-methylpropanoyl chloride (2 g, 7.2 mmol) in anhydrous MeCN (10 mL) at 0° C. The mixture was stirred at room temperature for 18 h and acidified with HCl (aq. 1M, 40 mL). Brine was added and the mixture was extracted with CH2Cl2. The combined extracts were washed with NaHCO3 (aq. sat) and brine, dried (Na2SO4), and concentrated to give the sub-title compound (2.12 g, 94%). the mixture was extracted with CH2Cl2 The combined extracts were washed with NaHCO3 (aq. sat) and brine dried (Na2SO4) concentrated

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

Procedure: 2-(4-Bromophenoxy)-2-methylpropanoyl chloride (2.34 g, 8.4 mmol) in THF (10 mL) was added dropwise whilst stirring to anhydrous MeOH (1.34 g, 42 mmol), Et3N (1.7 g, 16.8 mmol) and THF at 0° C. The mixture was stirred at room temperature for 3 h, concentrated and distilled to afford the sub-title compound (1.74 g, 97%). concentrated distilled

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

Procedure: 2-(4-Bromophenoxy)-2-methylpropanoyl chloride (2.34 g, 8.4 mmol) in THF (10 mL) was added dropwise whilst stirring to anhydrous MeOH (1.34 g, 42 mmol), Et3N (1.7 g, 16.8 mmol) and THF at 0° C. The mixture was stirred at room temperature for 3 h, concentrated and distilled to afford the sub-title compound (1.74 g, 97%). concentrated distilled

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

Procedure: A mixture of 2-(4-bromophenoxy)-2-methylpropanoic acid (10.0 g, 38.6 mmol). DMF (0.5 mL) and SOCl2 (40 mL) was heated for 3 h, allowed to cool and distilled to yield the sub-title compound (8.4 g, 78%). to cool distilled

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

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