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893737-04-7

4'-(1,3-DIOXOLAN-2-YL)[1,1'-BIPHENYL]-4-CARBALDEHYDE synthesis

3synthesis methods
-

Yield:893737-04-7 73.9%

Reaction Conditions:

with tetrabutylammomium bromide;potassium carbonate in water at 90 - 100; for 3 h;

Steps:

1.2

A 500 ml flask was charged with compound (261-b) (27.2 g, 0.119 mol), 4-formylphenylboronic acid (27.2 g, 0.136 mol), potassium carbonate (32 . 8 g, 0.237 mol), tetrabutylammonium bromide (11.5 g, 0.0 36 mol), Pd-132 (84 mg, 0.119 mmol), and water (272 ml ), And the mixture was stirred at 90 ° C. to 100 ° C. for 3 hours. The reaction mixture was warmed to room temperature and then toluene (100 ml × 3). The extract was washed with saturated brine, dried over anhydrous magnesium sulfate Dried and concentrated under reduced pressure. The residue was purified by silica gel chromatography (Kieselgel 60; Toluene) to obtain aldehyde (261-c) (22.3 g, 0.0879 mol; yield Rate of 73.9%)

References:

JP2017/39710,2017,A Location in patent:Paragraph 0153