Regioselective reaction (carbophilic over thiophilic attack) of several (o-fluorophenyl)lithium reagents with carbon disulfide was achieved to furnish dithioesters in good yields after alkylation, which are useful precursors of liquid crystal compounds having a difluoromethyleneoxy (-CF₂O-) group. Running the reaction in the presence of a copper(I) salt catalyst and cyclopentyl methyl ether as a solvent is optimal.

中文翻译：

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氟化芳基锂试剂和二硫化碳在环戊基甲醚中的区域选择性反应：二硫酸酯和具有二氟亚甲氧基部分的液晶化合物的高效合成

在烷基化后，几种（邻氟苯基）锂试剂与二硫化碳进行了区域选择性反应（嗜碳性，而不是亲硫性），以高收率提供了二硫酯，二硫酯是具有二氟亚甲氧基（-CF ₂ O-）基团的液晶化合物的有用前体。在铜（I）盐催化剂和环戊基甲基醚作为溶剂的存在下进行反应是最佳的。