4-bromo-5-fluoro-1-benzofuran

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

Procedure: Beginning with 3 gm (13 mMol) 2-allyl-3-bromo-4-fluorophenol, the title compound was prepared in 98% yield essentially by the procedure described in Preparation XXVII with the exception that the cyclization/dehydration step was performed using sulfuric acid in toluene.

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

Procedure: Beginning with 3 gm (13 mMol) 2-allyl-3-bromo-4-fluorophenol, the title compound was prepared in 98% yield essentially by the procedure described in Preparation XXXI with the exception that the cyclization/dehydration step was performed using sulfuric acid in toluene.

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

Procedure: Beginning with 1.13 gm (5.26 mMol) 4-bromo-5-fluorobenzofuran and 1.18 gm (6.2 mMol) 1-benzyl-3-methyl-4-oxopiperidine, 1.21 gm (68%) of the desired compound were prepared essentially as described in EXAMPLE 19.

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

Procedure: Beginning with 3 gm (13 mMol) 2-allyl-3-bromo-4-fluorophenol, the title compound was prepared in 98% yield essentially by the procedure described in Preparation XXVII with the exception that the cyclization/dehydration step was performed using sulfuric acid in toluene.

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

Procedure: Beginning with 3 gm (13 mMol) 2-allyl-3-bromo-4-fluorophenol, the title compound was prepared in 98% yield essentially by the procedure described in Preparation XXVII with the exception that the cyclization/dehydration step was performed using sulfuric acid in toluene.