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ChemicalBook CAS DataBase List 5-Iodo-thiophene-2-carboxylic acid
60166-85-0

5-Iodo-thiophene-2-carboxylic acid synthesis

5synthesis methods
-

Yield:60166-85-0 91%

Reaction Conditions:

with lithium hydroxide in tetrahydrofuran;water;

Steps:

1 5-Iodo-thiophene-2-carboxylic acid (P-2).

5-Iodo-thiophene-2-carboxylic acid (P-2). To a solution of lithium hydroxide (0.45 g, 11.19 mmol) in 17.5 mL of water was added compound P-1 (1.0 g, 3.73 mmol) in 35 mL of tetrahydrofuran. The resulting mixture was stirred for 4 hours at room temperature and was then acidified to pH 4 and extracted with ethyl acetate. The organic layer was dried (MgSO4), filtered and evaporated to yield 0.86 g (91% yield) of compound P-2 as a white solid. 1H NMR (400 MHz, CD3OD) d 7.35 (d, J=3.8 Hz, 1H), 7.43 (d, J=3.9 Hz, 1H).

References:

US6274620,2001,B1