Aryl(chloro)methyl 4-Tolyl Sulfoxides: Synthesis and Application to the Synthesis of α-Aryl Ketones
作者:Tsuyoshi Satoh、Shigehiko Fukuda、Kazuhito Tsuji、Jun Musashi、Ryo Nonaka、Tsutomu Kimura
DOI:10.1055/s-0031-1260251
日期:2011.11
Aryl(chloro)methyl 4-tolyl sulfoxides were synthesized from arylmethyl 4-tolyl sulfoxides in moderate-to-good yields by sequential treatment with lithium diisopropylamide and tosyl chloride at low temperatures. Treatment of the lithium α-sulfinyl carbanion of the aryl(chloro)methyl 4-tolyl sulfoxides with aldehydes or ketones resulted in the formation of adducts in good-to-high yields. Treatment of
通过在低温下依次用二异丙基氨基化锂和甲苯磺酰氯进行处理,由芳基甲基4-甲苯基亚砜以中等至良好的收率合成芳基(氯)甲基4-甲苯基亚砜。用醛或酮处理芳基(氯)甲基4-甲苯基亚砜的α-亚磺酰基锂的碳负离子导致加成物形成高至高收率。这些加合物与治疗叔丁基氯化镁得到相应的烷氧基镁。用异丙基氯化镁处理后,醇盐得到相应的镁β-氧化类胡萝卜素,它们重新排列后以高至高收率得到α-芳基酮。由β-氧化类胡萝卜素的重排产生的烯醇镁中间体也可以被亲电试剂捕获,得到α-芳基α-取代的酮。这些程序为从醛和酮合成各种α-芳基酮提供了一个很好的方法。 亚砜-α-芳基酮-同源物-醛