1-(bromomethyl)-2,3,5-triiodobenzene

Conditions: temp:0.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A solution of phosphorous tribromide (3.8 ml, 40 mmol) was added dropwise to a solution of 2,3,5-triiodobenzyl alcohol 1 (9.72 g, 20 mmol) in dry tetrahydrofuran (50 ml) at 0° C. under dry nitrogen gas flow. The reaction mixture was stirred 5 minutes at 0° C., then 20 minutes at room temperature (18° C.), then cold H2O/DCM (60160 ml) was added. The resulting aqueous phase was extracted with dichloromethane (2×10 ml). The combined organic extracts were washed with NaHCO3 aq (20 ml) and H2O (20 ml) then dried (Na2SO4), filtered and concentrated. The white solid was also washed with cold methanol (45 ml). 9.35 g of 2,3,5-triiodobenzyl bromide in the form of a white clean solid was obtained in 85% yield. The resulting aqueous phase was extracted with dichloromethane (2×10 ml) The combined organic extracts were washed with NaHCO3 aq (20 ml) and H2O (20 ml) then dried (Na2SO4) filtered concentrated The white solid was also washed with cold methanol (45 ml)

Conditions: temp:130.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: 447 mg of PVA 13 kDa (9 mmol, 1 eq) was dissolved in 30 ml of dry NMP (concentration of PVA: 0.3M) under nitrogen gas flow. The reaction mixture was stirred for 5 minutes at 130° C.; then the temperature was decreased to 50° C. 727 mg of ground and dried NaOH (18 mmol, 2 eq) was added and the mixture was stirred for 10 minutes. Then, 5 g of 2,3,5-triiodobenzyl bromide (9 mmol, 1 eq) was added. After 30 minutes, the mixture was cooled to room temperature and 30 ml of cold water was added under stirring. A solid precipitate appeared, was filtered and washed with methanol. After conventional steps of purification, 800 mg of TIB-PVA 13 kDa including 26% of residual NMP was obtained (representing 208 mg of NMP and 592 mg of TIB-PVA 13 kDa). was decreased to 50° C the mixture was stirred for 10 minutes After 30 minutes the mixture was cooled to room temperature under stirring was filtered washed with methanol After conventional steps of purification, 800 mg of TIB-PVA 13 kDa was obtained (representing 208 mg of NMP and 592 mg of TIB-PVA 13 kDa)

Conditions: temp:0.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A solution of phosphorous tribromide (3.8 ml, 40 mmol) was added dropwise to a solution of 2,3,5-triiodobenzyl alcohol 1 (9.72 g, 20 mmol) in dry tetrahydrofuran (50 ml) at 0° C. under dry nitrogen gas flow. The reaction mixture was stirred 5 minutes at 0° C., then 20 minutes at room temperature (18° C.), then cold H2O/DCM (60/60 ml) was added. The resulting aqueous phase was extracted with dichloromethane (2×10 ml). The combined organic extracts were washed with NaHCO3aq (20 ml) and H2O (20 ml) then dried (Na2SO4), filtered and concentrated. The white solid was also washed with cold methanol (45 ml). 9.35 g of 2,3,5-triiodobenzyl bromide in the form of a white clean solid was obtained in 85% yield. The resulting aqueous phase was extracted with dichloromethane (2×10 ml) The combined organic extracts were washed with NaHCO3aq (20 ml) and H2O (20 ml) then dried (Na2SO4) filtered concentrated The white solid was also washed with cold methanol (45 ml)

Conditions: temp:0.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A solution of phosphorous tribromide (3.8 ml, 40 mmol) was added dropwise to a solution of 2,3,5-triiodobenzyl alcohol 1 (9.72 g, 20 mmol) in dry tetrahydrofuran (50 ml) at 0° C. under dry nitrogen gas flow. The reaction mixture was stirred 5 minutes at 0° C., then 20 minutes at room temperature (18° C.), then cold H2O/DCM (60/60 ml) was added. The resulting aqueous phase was extracted with dichloromethane (2×10 ml). The combined organic extracts were washed with NaHCO3aq (20 ml) and H2O (20 ml) then dried (Na2SO4), filtered and concentrated. The white solid was also washed with cold methanol (45 ml). 9.35 g of 2,3,5-triiodobenzyl bromide in the form of a white clean solid was obtained in 85% yield. The resulting aqueous phase was extracted with dichloromethane (2×10 ml) The combined organic extracts were washed with NaHCO3aq (20 ml) and H2O (20 ml) then dried (Na2SO4) filtered concentrated The white solid was also washed with cold methanol (45 ml)

Conditions: temp:0.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A solution of phosphorous tribromide (3.8 ml, 40 mmol) was added dropwise to a solution of 2,3,5-triiodobenzyl alcohol 1 (9.72 g, 20 mmol) in dry tetrahydrofuran (50 ml) at 0° C. under dry nitrogen gas flow. The reaction mixture was stirred 5 minutes at 0° C., then 20 minutes at room temperature (18° C.), then cold H2O/DCM (60160 ml) was added. The resulting aqueous phase was extracted with dichloromethane (2×10 ml). The combined organic extracts were washed with NaHCO3 aq (20 ml) and H2O (20 ml) then dried (Na2SO4), filtered and concentrated. The white solid was also washed with cold methanol (45 ml). 9.35 g of 2,3,5-triiodobenzyl bromide in the form of a white clean solid was obtained in 85% yield. The resulting aqueous phase was extracted with dichloromethane (2×10 ml) The combined organic extracts were washed with NaHCO3 aq (20 ml) and H2O (20 ml) then dried (Na2SO4) filtered concentrated The white solid was also washed with cold methanol (45 ml)

Conditions: temp:0.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A solution of phosphorous tribromide (3.8 ml, 40 mmol) was added dropwise to a solution of 2,3,5-triiodobenzyl alcohol 1 (9.72 g, 20 mmol) in dry tetrahydrofuran (50 ml) at 0° C. under dry nitrogen gas flow. The reaction mixture was stirred 5 minutes at 0° C., then 20 minutes at room temperature (18° C.), then cold H2O/DCM (60160 ml) was added. The resulting aqueous phase was extracted with dichloromethane (2×10 ml). The combined organic extracts were washed with NaHCO3 aq (20 ml) and H2O (20 ml) then dried (Na2SO4), filtered and concentrated. The white solid was also washed with cold methanol (45 ml). 9.35 g of 2,3,5-triiodobenzyl bromide in the form of a white clean solid was obtained in 85% yield. The resulting aqueous phase was extracted with dichloromethane (2×10 ml) The combined organic extracts were washed with NaHCO3 aq (20 ml) and H2O (20 ml) then dried (Na2SO4) filtered concentrated The white solid was also washed with cold methanol (45 ml)

Conditions: temp:130.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: 447 mg of PVA 13 kDa (9 mmol, 1 eq) was dissolved in 30 ml of dry NMP (concentration of PVA: 0.3M) under nitrogen gas flow. The reaction mixture was stirred for 5 minutes at 130° C.; then the temperature was decreased to 50° C. 727 mg of ground and dried NaOH (18 mmol, 2 eq) was added and the mixture was stirred for 10 minutes. Then, 5 g of 2,3,5-triiodobenzyl bromide (9 mmol, 1 eq) was added. After 30 minutes, the mixture was cooled to room temperature and 30 ml of cold water was added under stirring. A solid precipitate appeared, was filtered and washed with methanol. After conventional steps of purification, 800 mg of TIB-PVA 13 kDa including 26% of residual NMP was obtained (representing 208 mg of NMP and 592 mg of TIB-PVA 13 kDa). was decreased to 50° C the mixture was stirred for 10 minutes After 30 minutes the mixture was cooled to room temperature under stirring was filtered washed with methanol After conventional steps of purification, 800 mg of TIB-PVA 13 kDa was obtained (representing 208 mg of NMP and 592 mg of TIB-PVA 13 kDa)

Conditions: temp:0.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A solution of phosphorous tribromide (3.8 ml, 40 mmol) was added dropwise to a solution of 2,3,5-triiodobenzyl alcohol 1 (9.72 g, 20 mmol) in dry tetrahydrofuran (50 ml) at 0° C. under dry nitrogen gas flow. The reaction mixture was stirred 5 minutes at 0° C., then 20 minutes at room temperature (18° C.), then cold H2O/DCM (60/60 ml) was added. The resulting aqueous phase was extracted with dichloromethane (2×10 ml). The combined organic extracts were washed with NaHCO3aq (20 ml) and H2O (20 ml) then dried (Na2SO4), filtered and concentrated. The white solid was also washed with cold methanol (45 ml). 9.35 g of 2,3,5-triiodobenzyl bromide in the form of a white clean solid was obtained in 85% yield. The resulting aqueous phase was extracted with dichloromethane (2×10 ml) The combined organic extracts were washed with NaHCO3aq (20 ml) and H2O (20 ml) then dried (Na2SO4) filtered concentrated The white solid was also washed with cold methanol (45 ml)