Farbstoffsensibilisierte Photo-Oxygenierung von(−)-<i>cis</i>-Pulegol und (+)-Pulegon. Zur Addition von O<sub>2</sub>(<sup>1</sup>Δ<sub>g</sub>) an Doppelbindungen mit allylständiger. Hydroxyl- oder Carbonyl-Gruppe
作者:K. H. Schulte-Elte、M. Gadola、B. L. Müller
DOI:10.1002/hlca.19710540714
日期:1971.11.1
(−)-cis-Pulegol (1) and (+)-pulegone (2) readily add one mole of oxygen on dyesensitized photo-oxygenation in solution, forming almost exclusively allyl hydroperoxides.
Biocidal Compounds from<i>Mentha</i>sp. Essential Oils and Their Structure-Activity Relationships
作者:Athanasios C. Kimbaris、Azucena González-Coloma、Maria Fe Andrés、Veroniki P. Vidali、Moschos G. Polissiou、Omar Santana-Méridas
DOI:10.1002/cbdv.201600270
日期:2017.3
semi‐synthetic endocyclic trans‐carvone epoxide, exocyclic carvone epoxide, a new exocyclic piperitenone epoxide and trans‐pulegone epoxide. Leptinotarsa decemlineata feeding was affected by piperitenone and piperitoneepoxide. Spodoptera littoralis was affected by piperitoneepoxide and pulegone. The strongest nematicidal agent was piperitenone epoxide, followed by piperitoneepoxide, piperitenone and carvone.
The rearrangement of (+)-cis- (I) and (−)-trans-pulegone oxide (II) was effected by the catalysis of zinc bromide in boiling benzene to give the same (−)-2,2,5-trimethylcyclohepta-1,3-dione (III), with a retention of the optical activity. The structure of (−)-III with the expanded 7-membered ring was confirmed by the chemical transformation into 1,1,4-trimethyl-cycloheptane(IV), which was identical
Probing for Steric and Electronic Effects in Diastereoselective Dioxirane Epoxidations Compared to The Oxygen Transfer by Peroxy Acids
作者:Waldemar Adam、Rodrigo Paredes、Alexander K. Smerz、L. Angela Veloza
DOI:10.1002/jlac.199719970316
日期:1997.3
derivatives of 2-cyclohexenol derives fromsteric interactions, whereas a pronounced electronic effect (electrostatic repulsion) is held responsible for the high anti selectivity of peroxides such as ascaridol and 3-hydroperoxycyclohexene. Quite generally, dioxiranes display only slightly higher diastereoselectivities than mCPBA in sterically controlled epoxidations of cycloalkenes.