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ChemicalBook CAS DataBase List 1-BENZOTHIOPHENE-5-CARBALDEHYDE
10133-30-9

1-BENZOTHIOPHENE-5-CARBALDEHYDE synthesis

7synthesis methods
-

Yield: 92%

Reaction Conditions:

with manganese(IV) oxide in benzene for 12 h;

Steps:

73.a
a) benzorblthiophene-5-carbaldehvde; Benzo[b]thiophen-5-ylmethanol (311 mg, 1.89 mmol) was dissolved in anhydrous benzene (20 niL). MnO2 (1317 mg, 15.2 mmol) was added and the reaction was stirred for 12 h. The solution was filtered through celite and the filter cake was washed with ethyl acetate (50 mL). The filtrate was concentrated under vacuum to give the product (284 mg, 92%) as an off-white solid: 1H NMR (400 MHz, OMSOd6) δ 10.09 (s, IH), 8.46-8.45 (m, IH), 8.21 (d, J= 8.4 Hz, IH), 7.94 (d, J= 5.6 Hz, IH), 7.81 (dd, J= 8.4, 1.2 Hz, IH), 7.66 (d, J= 5.6 Hz, IH).

References:

AFFINIUM PHARMACEUTICALS, INC. WO2007/53131, 2007, A2 Location in patent:Page/Page column 176-177

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