米国産NTU頁岩油成分の研究(第5報) : 中間層塩基のHofmann分解

概要

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The "middle-layer base"in NTU shale oil was characterized as long-chained 2,4,6-trialkylpyridines (TAP). The distribution of the number of carbon atoms in the chain of TAP (bp 152-153°/0.07 Torr fraction) was examined by the Hofmann degradation. The alkyl substituents in the α-position of TAP were found to be a mixture of alkyl groups from C_2 to C_<12>, and those in the γ-position, to be a mixture of alkyl groups from C_2 to C_<11>. The alkyl group found in the largest volume was a heptyl group (16.5%) in the α-position and pentyl group (17.0%) in the γ-position. The alkyl group was a normal, unbranched chain of carbon atoms. It was found that TAP had more unsymmetric alkyl substituents than symmetric alkyl groups.
公益社団法人日本薬学会の論文
1972-06-25