273400-25-2Relevant academic research and scientific papers
Novel ring contraction of dioxepanes to tetrahydropyrans. Reaction of dioxepanes with trimethylsilyl trifluoromethanesulfonate
Okuma, Kentaro,Hayano, Tetsuji,Shioji, Kosei,Matsuyama, Haruo
, p. 2171 - 2174 (2000)
Reaction of 5-methylene-1,3-dioxepanes derived from oxaphospholanes and paraformaldehyde with trimethylsilyl trifluoromethanesulfonate in the presence of a base yielded novel, exo formyl tetrahydropyran derivatives in good yields. (C) 2000 Elsevier Science Ltd.
Synthesis of cyclic ethers from 3- and 4-hydroxyalkylphosphonium salts
Okuma, Kentaro,Sakai, Osami,Hayano, Tetsuji,Shioji, Kosei,Matsuyama, Haruo
, p. 2209 - 2213 (2007/10/03)
The reaction of 6-methylene-1,3-dioxepanes derived from 3-hydroxyalkyltriphenylphosphonium salts and paraformaldehyde with trimethylsilyl trifluoromethanesulfonate in the presence of N,N- diisopropylethylamine yielded novel 4-formyltetrahydropyrans. 3-Met
