Starting from 3‐methylthiophene, 11 new sensory‐active thiophene derivatives were synthesized. Among them, 3‐(5‐butyl‐3‐methylthiophen‐2‐yl)‐1‐methylpropyl acetate (3), 2,5‐dibutyl‐3‐methylthiophene, and 1‐methyl‐3‐(3‐methylthiophen‐2‐yl)propyl acetate (12) were characterized by long‐lasting citrus scents. The individual enantiomers of esters 3 and 12, which have been characterized in terms of fragrance, were also obtained.

中文翻译：

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具有持久柑橘味的噻吩衍生物的合成

从3-甲基噻吩开始，合成了11种新的感官活性噻吩衍生物。其中，3-（5-丁基-3-甲基噻吩-2-基）-1-甲基丙基乙酸酯（3），2,5-二丁基-3-甲基噻吩和1-甲基-3-（3-甲基噻吩-2乙酸-乙烯基）丙酯（12）具有持久的柑橘香气。还获得了酯3和12的单独对映异构体，其已根据香味进行了表征。