| 摘要 |
<p>4-Chloro-2-thiophenecarboxylic acid is made by forming a compound of formula (Ia), wherein R3 is (C¿1?-C6) alkyl, phenyl, or benzyl; converting the compound to a compound of formula (IVa); and removing the silyl group R3Si-. The product is useful as an intermediate in making pharmaceutical products.</p> |
