3,5,5,8,8-五甲基-5,6,7,8-四氢萘-2-硼酸

反应条件: temp:0.00; pressure:0.00; stir:

反应条件: temp:0.00; pressure:0.00; stir:

反应条件: temp:0.00; pressure:0.00; stir:

反应条件: temp:0.00; pressure:0.00; stir:

反应条件: temp:0.00; pressure:0.00; stir:

反应条件: temp:0.00; pressure:0.00; stir:

反应条件: temp:0.00; pressure:0.00; stir:

反应条件: temp:0.00; pressure:0.00; stir:

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: In a similar manner to Example 9(b), by reaction of 73.4 g (0.30 mol) of 3,5,5,8,8-pentamethyl-5,6,7,8-tetrahydro-2-naphthylboronic acid with 44.7 g (0.20 mol) of 4-bromophenylacrylic acid, and after recrystallization from ethanol, 48 g (61%) of 3-(3,5,5,8,8-pentamethyl-5,6,7,8-tetrahydro-2-naphthyl)phenylacrylic acid are obtained, with a melting point of 207-8° C. after recrystallization from ethanol, 48 g (61%) of 3-(3,5,5,8,8-pentamethyl-5,6,7,8-tetrahydro-2-naphthyl)phenylacrylic acid are obtained, with a melting point of 207-8° C.

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: In a similar manner to Example 3(b), by reaction of 2.47 g (10 mmol) of 3,5,5,8,8-pentamethyl-5,6,7,8-tetrahydro-2-naphthylboronic acid with 1.5 g (8.4 mmol) of 4-bromo-2-pyrrolecarboxaldehyde, 950 mg (38.5%) of the expected aldehyde are obtained, with a melting point of 128-9° C. are obtained, with a melting point of 128-9° C.

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: In a similar manner to Example 3(b), by reaction of 2.47 g (10 mmol) of 3,5,5,8,8-pentamethyl-5,6,7,8-tetrahydro-2-naphthylboronic acid with 1.5 g (8.4 mmol) of 4-bromo-2-pyrrolecarboxaldehyde, 950 mg (38.5%) of the expected aldehyde are obtained, with a melting point of 128-9° C. are obtained, with a melting point of 128-9° C.

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: 700 ml of DME, 2.4 g (2 mmol) of tetrakistriphenylphosphinepalladium (0) and 8.44 g (45.6 mmol) of 3-bromobenzaldehyde are introduced into a three-necked flask under a stream of nitrogen and the mixture is stirred for 10 minutes. A solution of 17 g (69.1 mmol) of 3,5,5,8,8-pentamethyl-5,6,7,8-tetrahydro-2-naphthylboronic acid in 25 ml of ethanol are then added, followed by 46 ml (91 mmol) of potassium carbonate solution (2 M) and the mixture is refluxed for four hours. The reaction medium is cooled and filtered and the solid is washed with bicarbonate solution and then with ethyl acetate. The solid obtained is recrystallized from ethanol and 7 g (50%) of the expected aldehyde are collected, with a melting point of 104-5° C. the mixture is refluxed for four hours The reaction medium is cooled filtered the solid is washed with bicarbonate solution The solid obtained is recrystallized from ethanol and 7 g (50%) of the expected aldehyde are collected, with a melting point of 104-5° C.