A convenient synthesis for 4and 7-n-undecyl-1,10-phenanthrollnes, based on a modified Doebner-von Miller reaction, Is described for the following 1,10-phenanthrollnes: 4-n-undecyl, 4,7-dl-n-undecyl, 2-methyl-4-n-undecyl, 2,9-dlmethyl-4-n-undecyl, and 2-methyl-7-n-undecyl.
Aus n‐Dodecylaldehyd (I) und den Grignardreagenzien (II) werden die ungesättigten Alkohole (IIIa) und (IIIb) dargestellt und nach modi?zier‐ 0C ten Literaturverfahren zu den ungesättigten Ketonen (IVa), (IVb) bzw. (V) oxidiert.
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