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154392-17-3

1,3-Benzodioxole-4-carboxaldehyde, 5-hydroxy- synthesis

3synthesis methods
5-(methoxymethoxy)-2h-1,3-benzodioxole-4-carbaldehyde

120046-45-9
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1,3-Benzodioxole-4-carboxaldehyde, 5-hydroxy-

154392-17-3
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Yield:154392-17-3 58%

Reaction Conditions:

with trifluoroacetic acid in dichloromethane at 0 - 20; for 3 h;

Steps:

6.3 Step 3: Example 6d

To a solution of Example 6c (0.81 g, 3.8 mmol) in DCM (30 mL) was added TFA (0.8 mL), the mixture was stirred at 0°C for 1 hr, then it was turned to r.t and stirred for another 2 hrs. The solvent was then removed under reduced pressure to give the desired product (Example 6d, 0.4 g, yield 58%) as yellow solid.

References:

WO2017/218960,2017,A1 Location in patent:Paragraph 00400

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