C(O)CCC#C.IC1SC=CC=1.[S:13]1[CH:17]=[CH:16][CH:15]=[C:14]1[C:18]#[C:19][CH2:20][CH2:21][CH:22]=[O:23]>>[S:13]1[CH:17]=[CH:16][CH:15]=[C:14]1[C:18]#[C:19][CH2:20][CH2:21][CH2:22][OH:23]5-thienyl-4-pentyn-1-ol was prepared from 4-pentyn-1-ol and 2-iodothiophene as in Example 15 and converted into 5-thienyl-4-pentyn-1-al as in Example 9.
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