68480-13-7Relevant articles and documents
An effective procedure for the synthesis of acid-sensitive epoxides: Use of 1-methylimidazole as the additive on methyltrioxorhenium-catalyzed epoxidation of alkenes with hydrogen peroxide
Yamazaki, Shigekazu
supporting information; experimental part, p. 2377 - 2385 (2010/07/06)
An effective method for suppression of ring opening and rearrangement of acid-sensitive epoxides during methyltrioxorhenium(MTO)-catalyzed epoxidation of alkenes with H2O2 by using 1-methylimidazole as a co-additive has been found. The combined use of 3-methylpyrazole and 1-methylimidazole as the additives has been found to be an effective procedure that affords excellent yields of acid-sensitive epoxides for MTO-catalyzed epoxidation.
Tightly convoluted polymeric phosphotungstate catalyst: An oxidative cyclization of alkenols and alkenoic acids
Yamada, Yoichi M. A.,Guo, Haiqing,Uozumi, Yasuhiro
, p. 1501 - 1504 (2008/02/03)
Equation Presented A tightly convoluted polymeric phosphotungstate catalyst was prepared via ionic assembly of H3PW12O40 and poly(alkylpyridinium). An oxidative cyclization of various alkenols and alkenoic acids was efficiently promoted by the polymeric catalyst in aq H 2O2 in the absence of organic solvents to afford the corresponding cyclic ethers and lactones in high yield. The catalyst was reused four times without loss of catalytic activity.
Oxidative cyclization of 5-hydroxyalkenes with rhenium oxide, utilizing a co-oxidant. IV
Tang, Suhan,Kennedy, Robert M.
, p. 5303 - 5306 (2007/10/02)
5-Hydroxylalkenes react with rhenium(VII) oxide in the presence of another oxidant, H5IO6, to provide substituted tetrahydrofurans. The yield and stereoselectivity are comparable to stoichiometric results.