Purified <i>m</i>
CPBA, a Useful Reagent for the Oxidation of Aldehydes
作者:Alexander Horn、Uli Kazmaier
DOI:10.1002/ejoc.201701645
日期:2018.6.7
Purified mCPBA is a useful reagent for the oxidation of several classes of aldehyde. Although linear unbranched aliphatic aldehydes are oxidized to the corresponding carboxylic acids, α‐branched ones undergo Baeyer–Villiger oxidation to formates. α‐Branched α,β‐unsaturated aldehydes provide enolformates and/or epoxides, which can be saponified to α‐hydroxy ketones with shortening of the carbon chain by
A general method for the highly diastereoselective, kinetically controlled alkylation of (+)-nopinone
作者:Kevin R Campos、Sandra Lee、Michel Journet、Jason J Kowal、Dongwei Cai、Robert D Larsen、Paul J Reider
DOI:10.1016/s0040-4039(02)01589-7
日期:2002.9
A generalmethod for the monoalkylation of (+)-nopinone was developed for a variety of carbon and heteroatom electrophiles to afford the kinetically controlled product 2 with high diastereoselectivity (98% d.e.) and excellent yield (75–90%).
Ensemble of Pinanones from the Permanganate Oxidation of Myrtenal
作者:Julia M. Clay、Dusan Hesek、Allen G. Oliver、Mijoon Lee、Jed F. Fisher
DOI:10.1021/acs.joc.6b00756
日期:2016.7.1
The buffered permanganateoxidation of (−)-myternal, a member of the pinene family, provides the α-hydroxyketone (−)-(1R,3S,5R)-3-hydroxy-6,6-dimethylbicyclo[3.1.1]heptan-2-one in preparative yield (65% on a multigram scale). This α-hydroxyketone is oxidized, in a second reaction, to the α,β-diketone (1R,5R)-6,6-dimethylbicyclo[3.1.1]heptane-2,3-dione (“PinDione”). As both oxidations are fast, simple