A Convenient Preparative Method for New 1,3-Bis(hetaryl)-2-chloropropen-1-ones Using β-Alkoxy-α-chloroalkenyllithium Compounds
作者:Akinori Itoh、Miho Sakai、Mitsuhiro Yoshimatsu
DOI:10.1002/ejoc.200600957
日期:2007.4
3-bis(hetaryl)propen-1-ones 14a–e, 16, 17a–c, 19, 20a and the corresponding acetals 15a–d, 18a and 21a–d were successfully synthesized by a stepwise process: the reaction of α-chloro-β-ethoxyethenyllithium compounds and aldehydes and ketones, and the successive hydration with TMSOTf. Further palladium-catalyzed arylation of 1,3-biaryl-2-chloroprop-2-enones proceeded with good yields.(© Wiley-VCH Verlag GmbH &
1,3-联芳基和 1,3-双(杂芳基)丙烯-1-酮 14a-e, 16, 17a-c, 19, 20a 和相应的缩醛 15a-d, 18a 和 21a-d 通过以下方法成功合成一步法:α-氯-β-乙氧基乙烯基锂化合物与醛、酮反应,与TMSOTf依次水合。进一步钯催化的 1,3-联芳基-2-氯丙-2-烯酮芳基化反应收率良好。(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2007)