4-bromo-2,3,5,6-tetrafluorobenzaldehyde

Conditions: temp:18.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Sodium borohydride (1.0 g) was added portionwise over a period of 30 minutes to a stirred solution of 4-bromo-2,3,5,6-tetrafluorobenzaldehyde (8.2 g) in methanol (80 cm3) whilst the temperature was maintained within the range from -5° C. to +5° C., after which the mixture was stirred for 2 hours at the ambient temperature (ca. 18° C.). The mixture was poured into water and the precipitated white solid collected by filtration, washed with water and air dried to yield 4-bromo-2,3,5,6-tetrafluorobenzyl alcohol (7.5 g), m.p. 60°-62° C. was maintained within the range from -5° C. to +5° C. the precipitated white solid collected by filtration washed with water and air dried

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

Conditions: temp:-5.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Sodium borohydride (1.0 g) was added portionwise over a period of 30 minutes to a stirred solution of 4-bromo-2,3,5,6-tetrafluorobenzaldehyde (8.2 g) in methanol (80 cm3) whilst the temperature was maintained within the range from -5° C. to ±5° C., after which the mixture was stirred for 2 hours at the ambient temperature (ca 18° C.). The mixture was poured into water and the precipitated white solid collected by filtration, washed with water and air dried to yield 4-bromo-2,3,5,6-tetrafluorobenzyl alcohol (7.5 g), mp. 60°-62° C. to ±5° C. the precipitated white solid collected by filtration washed with water and air dried

Conditions: temp:-5.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Sodium borohydride (1.0 g) was added portionwise over a period of 30 minutes to a stirred solution of 4-bromo-2,3,5,6-tetrafluorobenzaldehyde (8.2 g) in methanol (80 cm3) whilst the temperature was maintained within the range from -5° C. to ±5° C., after which the mixture was stirred for 2 hours at the ambient temperature (ca 18° C.). The mixture was poured into water and the precipitated white solid collected by filtration, washed with water and air dried to yield 4-bromo-2,3,5,6-tetrafluorobenzyl alcohol (7.5 g), mp. 60°-62° C. to ±5° C. the precipitated white solid collected by filtration washed with water and air dried

Conditions: temp:18.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Sodium borohydride (1.0 g) was added portionwise over a period of 30 minutes to a stirred solution of 4-bromo-2,3,5,6-tetrafluorobenzaldehyde (8.2 g) in methanol (80 cm3) whilst the temperature was maintained within the range from -5° C. to +5° C., after which the mixture was stirred for 2 hours at the ambient temperature (ca. 18° C.). The mixture was poured into water and the precipitated white solid collected by filtration, washed with water and air dried to yield 4-bromo-2,3,5,6-tetrafluorobenzyl alcohol (7.5 g), m.p. 60°-62° C. was maintained within the range from -5° C. to +5° C. the precipitated white solid collected by filtration washed with water and air dried

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

Conditions: temp:18.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Sodium borohydride (1.0 g) was added portionwise over a period of 30 minutes to a stirred solution of 4-bromo-2,3,5,6-tetrafluorobenzaldehyde (8.2 g) in methanol (80 cm3) whilst the temperature was maintained within the range from -5° C. to +5° C., after which the mixture was stirred for 2 hours at the ambient temperature (ca. 18° C.). The mixture was poured into water and the precipitated white solid collected by filtration, washed with water and air dried to yield 4-bromo-2,3,5,6-tetrafluorobenzyl alcohol (7.5 g), m.p. 60°-62° C. was maintained within the range from -5° C. to +5° C. the precipitated white solid collected by filtration washed with water and air dried

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

Procedure: Sodium borohydride (1.0 g) was added portionwise over a period of 30 minutes to a stirred solution of 4-bromo-2,3,5,6-tetrafluorobenzaldehyde (8.2 g) in methanol (80 cm3) whilst the temperature was maintained within the range from -5° C. to +5° C., after which the mixture was stirred for 2 hours at the ambient temperature (ca 18° C.). The mixture was poured into water and the precipitated white solid collected by fitration, washed with water and air dried to yield 4-bromo-2,3,5,6-tetrafluorobenzyl alcohol (7.5 g), mp. 60°-62° C. was maintained within the range from -5° C. to +5° C. the precipitated white solid collected by fitration washed with water and air dried

Conditions: temp:-5.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Sodium borohydride (1.0 g) was added portionwise over a period of 30 minutes to a stirred solution of 4-bromo-2,3,5,6-tetrafluorobenzaldehyde (8.2 g) in methanol (80 cm3) whilst the temperature was maintained within the range from -5° C. to ±5° C., after which the mixture was stirred for 2 hours at the ambient temperature (ca 18° C.). The mixture was poured into water and the precipitated white solid collected by filtration, washed with water and air dried to yield 4-bromo-2,3,5,6-tetrafluorobenzyl alcohol (7.5 g), mp. 60°-62° C. to ±5° C. the precipitated white solid collected by filtration washed with water and air dried