A new property of geminal bishydroperoxides: Hydrolysis with the removal of hydroperoxide groups to form a ketone
摘要:
A new property of geminal bishydroperoxide was discovered: the ability to hydrolyze in acid medium in the presence of hydrogen peroxide with the formation of ketones. The most resistant to hydrolysis are the cyclic C(6)-bishydroperoxydes: at room temperature within one day they are practically not hydrolyzed; less stable is bishydroperoxycycloheptane (C(7)): in a day its one fifth part is hydrolyzed. Bishydroperoxydes with the cycles of C(8) and C(12) for the same time hydrolyzed to 80 and 90% respectively. Of the two linear bishydroperoxydes, 2,2-dihydroperoxydecane, with sterically unhindered center, is more resistant to hydrolysis than 6,6-dihydroperoxyundecane.
CsOH- or Ag2O-mediated cycloalkylation of (alkylidene)bisperoxides 3 and 1,n.-dihaloalkanes (n = 3-8) provided the corresponding medium-sized 1,2,4,5-tetraoxacycloalkanes 4-8 in moderate yields. Subsequent evaluation of the antimalarial activity of the cyclic peroxides 4-8 in vitro and in vivo revealed that 1,2,6,7-tetraoxaspiro [7.11]nonadecane 4a has considerable potential as a new, inexpensive, and potent antimalarial drug.
A new property of geminal bishydroperoxides: Hydrolysis with the removal of hydroperoxide groups to form a ketone
作者:A. O. Terent’ev、O. B. Krivykh、I. B. Krylov、Yu. N. Ogibin、G. I. Nikishin
DOI:10.1134/s1070363210080165
日期:2010.8
A new property of geminal bishydroperoxide was discovered: the ability to hydrolyze in acid medium in the presence of hydrogen peroxide with the formation of ketones. The most resistant to hydrolysis are the cyclic C(6)-bishydroperoxydes: at room temperature within one day they are practically not hydrolyzed; less stable is bishydroperoxycycloheptane (C(7)): in a day its one fifth part is hydrolyzed. Bishydroperoxydes with the cycles of C(8) and C(12) for the same time hydrolyzed to 80 and 90% respectively. Of the two linear bishydroperoxydes, 2,2-dihydroperoxydecane, with sterically unhindered center, is more resistant to hydrolysis than 6,6-dihydroperoxyundecane.
Convenient Synthesis of Geminal Bishydroperoxides by the Reaction of Ketones with Hydrogen Peroxide
作者:A. O. Terent'ev、M. M. Platonov、Y. N. Ogibin、G. I. Nikishin
DOI:10.1080/00397910701226384
日期:2007.4.1
Abstract A convenient procedure was developed for the synthesis of geminal bishydroperoxides by the sulfuric acid–catalyzed reaction of ketones with hydrogen peroxide in THF. Gem‐bishydroperoxides were prepared by the reactions of five‐ to seven‐membered cycloalkanones without additional purification in 80–95% yields with a purity of more than 95%; their acyclic analogs were prepared in 43–72% yields