Summary
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1.
The following thiophene derivatives were prepared: 5-methyl-2-thienyl 2-thienyl ketone, 5-methyl-2,2'-methylenedithiophene, 5-(5-methyl-2-thenyl)-2-thiophenecarboxaldehyde, 5-butyl-2-thiophenecarboxal-dehyde, 5-tert-butyl-2-methyl- or 2-tert-butyl-5-methyl-3-thiophenecarboxaldehyde, 2,5-di-tert-butyl-3-thiophenecarboxaldehyde.
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2.
By the action of Raney nickel of 5-methyl-2-thienyl 2-thienyl ketone, 5-(5-methyl-2-thenyl)-2-thiophenecarboxaldehyde, 5-butyl-2-thiophenecarboxaldehyde, 5-tert-butyl-2-methyl- or 2-tert-butyl-5methyl-3-thiophenecarboxaldehyde, 2,5-di-tert-butyl-3-thiophenecarboxaldehyde, and 5-tert-butyl-2-thio phenecarboxaldehyde we were able to prepare the following aliphatic alcohols: 5-decanol, 1-undecanol, 1-nonanol, 5,5-dimethyl-2-ethyl- l-hexanol (or.4,4-dimethyl-2-propyl-l-pentanol), 5,5-dimethyl-2-neopentyl1-hexanol, and 6,6-dimethyl-l-heptanol.
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3.
An attempt to bring about the hydrogenolysis of 2,5-di-tert-butyl-3-thienyl methyl ketone over Raney nickel W-5 did not give the desired results.
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Author's Certificate No. 100, 411 (April 19, 1955).