Cs<sub>2</sub>CO<sub>3</sub>-Promoted reaction of tertiary bromopropargylic alcohols and phenols in DMF: a novel approach to α-phenoxyketones
作者:Ol'ga G Volostnykh、Olesya A Shemyakina、Anton V Stepanov、Igor' A Ushakov
DOI:10.3762/bjoc.18.44
日期:——
The reaction of bromopropargylic alcohols with phenols in the presence of Cs2CO3/DMF affords α-phenoxy-α’-hydroxyketones (1:1 adducts) and α,α-diphenoxyketones (1:2 adducts) in up to 92% and 24% yields, respectively. Both products are formed via ring opening of the same intermediates, 1,3-dioxolan-2-ones, generated in situ from bromopropargylic alcohols and Cs2CO3.
在 Cs 2 CO 3 /DMF存在下溴代炔丙醇与酚类的反应产生高达 92% 的 α-苯氧基-α'-羟基酮(1:1 加合物)和 α,α-二苯氧基酮(1:2 加合物)和收益率分别为 24%。两种产品都是通过相同的中间体 1,3-二氧戊环-2-酮的开环形成的,该中间体由溴炔丙醇和 Cs 2 CO 3原位生成。
Nasarow et al., Zhurnal Obshchei Khimii, 1959, vol. 29, p. 753,757; engl. Ausg. S. 741, 744
作者:Nasarow et al.
DOI:——
日期:——
Iodobenzene-catalyzed synthesis of <font>α</font>,<font>α</font>′-dihydroxy ketones: In situ generation of [bis(trifluoroacetoxy)iodo]benzene
作者:Chengqun Chen、Minghua You、Hong Chen
DOI:10.1080/00397911.2015.1121279
日期:2016.1.2
Exposure of ethynyl carbinols to oxone/(CF3CO)(2)O in the presence of a catalytic amount of iodobenzene afforded ,-dihydroxy ketones in good yield, which are common structural motifs in natural products and biologically active compounds. Compared with traditional methods, this method is more convenient and avoids using stoichiometric amounts of hypervalent iodine reagents.
Hydroxylation of acetylenic compounds
申请人:RESEARCH CORP
公开号:US02347358A1
公开(公告)日:1944-04-25
Schroetter, Eberhard; Weidner, Judith; Schick, Hans, Liebigs Annalen der Chemie, 1991, # 4, p. 397 - 398
作者:Schroetter, Eberhard、Weidner, Judith、Schick, Hans