Synthesis of Enantioenriched Bromohydrins via Divergent Reactions of Racemic Intermediates from Anchimeric Oxygen Borrowing
作者:Yi-Ming Cao、Dieter Lentz、Mathias Christmann
DOI:10.1021/jacs.8b06432
日期:2018.8.29
catalyzed bromocyclization/regiodivergent reaction of racemic intermediates sequence, which is enabled by anchimeric oxygen borrowing. Different types of alkenes are applicable, and both enantiomers of the bromohydrin products were obtained in generally excellent yields and enantioselectivities. In addition, an example of enantioconvergentsynthesisfrom the two isomeric products is presented.
Copper-Catalyzed Cross-Coupling of Thiols, Alcohols, and Oxygen for the Synthesis of Esters
作者:Seungyeon Lim、Miran Ji、Xi Wang、Chan Lee、Hye-Young Jang
DOI:10.1002/ejoc.201403311
日期:2015.1
Copper-catalyzed, one-pot, three-component coupling reactions using thiols, alcohols, and oxygen to form a variety of esters in good yields were studied. In the presence of easily oxidized benzylic and allylic alcohols, thiols were selectively oxidized to form thionoesters, which underwent facile S/O exchange to afford esters. Thiols may be used as an alternative benzoyl source under mild aerobic conditions
Tetrabutylammonium Iodide Catalyzed Synthesis of Allylic Ester with <i>tert</i>-Butyl Hydroperoxide as an Oxidant
作者:Erbo Shi、Ying Shao、Shulin Chen、Huayou Hu、Zhaojun Liu、Jie Zhang、Xiaobing Wan
DOI:10.1021/ol3013606
日期:2012.7.6
A metal-free C H oxidation for the construction of allylic esters has been developed. The use of a commercially available and inexpensive catalyst and oxidant, and readily available starting materials, coupled with the operational simplicity of the reaction, renders the methodology a useful alternative to other approaches typically employed in the synthesis of allylic esters.
Aghapour, Ghasem; Karimzadeh, Maryam, Indian Journal of Chemistry - Section B Organic and Medicinal Chemistry, 2016, vol. 55B, # 8, p. 1013 - 1018