Synthesis ( IF 2.2 ) Pub Date : 2019-07-23 , DOI: 10.1055/s-0039-1690009
Kazumasa Kitahara , Haruna Mizutani , Seiji Iwasa , Kazutaka Shibatomi 1
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Published as part of the Special Topic Halogenation methods (with a view towards radioimaging applications)
Abstract
Chiral α-chloro-α-fluoro ketones were synthesized by enantioselective decarboxylative chlorination of α-chloro-β-ketocarboxylic acids in the presence of a chiral amine catalyst. The reaction yielded the corresponding α-chloro-α-fluoro ketones with moderate-to-high enantioselectivity (up to 90% ee). The method was also applied to the synthesis of α-bromo-α-chloro ketones with 90% ee.
Chiral α-chloro-α-fluoro ketones were synthesized by enantioselective decarboxylative chlorination of α-chloro-β-ketocarboxylic acids in the presence of a chiral amine catalyst. The reaction yielded the corresponding α-chloro-α-fluoro ketones with moderate-to-high enantioselectivity (up to 90% ee). The method was also applied to the synthesis of α-bromo-α-chloro ketones with 90% ee.
中文翻译：
α-卤代-β-酮羧酸的脱羧氯化反应不对称合成α-氯代-α-卤代酮
作为特殊主题卤化方法的一部分发布（以放射成像应用为目的）
抽象的
在手性胺催化剂的存在下，通过α-氯-β-酮羧酸的对映选择性脱羧氯化反应，合成了手性α-氯-α-氟代酮。反应产生具有中等至高对映选择性（至多90％ee）的相应α-氯-α-氟代酮。该方法还用于ee为90％的α-溴-α-氯代酮的合成。
在手性胺催化剂的存在下，通过α-氯-β-酮羧酸的对映选择性脱羧氯化反应，合成了手性α-氯-α-氟代酮。反应产生具有中等至高对映选择性（至多90％ee）的相应α-氯-α-氟代酮。该方法还用于ee为90％的α-溴-α-氯代酮的合成。
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