Aliyan, Hamid; Fazaeli, Razieh; Massah, Ahmad Reza, Asian Journal of Chemistry, 2010, vol. 22, # 2, p. 873 - 876
作者:Aliyan, Hamid、Fazaeli, Razieh、Massah, Ahmad Reza、Momeni, Ahmad Reza、Naghash, Hamid Javaherian、Moeinifard, Behzad
DOI:——
日期:——
Synthesis of cyclic and acyclic enol ethers (vinyl ethers)
作者:Paul G. Gassman、Stephen J. Burns、Keith B. Pfister
DOI:10.1021/jo00058a027
日期:1993.3
A general method has been developed for the conversion of both cyclic and acyclic acetals of cyclic ketones, acyclic ketones, and aldehydes into enol ethers through treatment of the acetal with trimethylsilyl triflate in the presence of N,N-diisopropylethylamine. The range of isolated yields of enol ethers from the various classes of acetals was as follows: cyclic acetals of cyclic ketones, 83-98%; acyclic acetals of ketones, 72-94%; acyclic and cyclic acetals of aldehydes, 65-90%.
Efficient and Chemoselective Conversion of Carbonyl Compounds to 1,3-Dioxanes Catalyzed with <i>N</i>-Bromosuccinimide under Almost Neutral Reaction Conditions
作者:Babak Karimi、G. Reza Ebrahimian、Hassan Seradj
DOI:10.1021/ol9909987
日期:1999.12.1
[GRAPHICS]Various types of carbonyl compounds were converted to the corresponding 1,3-dioxanes in the presence of ethyl orthoformate, 1,3-propanediol, and a catalytic amount of NBS via an in situ acetal exchange process. In contrast to conventional acid-catalyzed acetalization reactions, acid sensitive substrates such as THP ethers and TBDMS ethers remain intact under described reaction conditions.