Carbon–hydrogen and C–X (X = Cl or SiMe<sub>3</sub>) bond activation. 1-Cyclopalladation and oxidation of some derivatives of 2-[(dimethylamino)methyl]naphthalene
作者:Jean-Marc Valk、Ruud van Belzen、Jaap Boersma、Anthony L. Spek、Gerard van Koten
DOI:10.1039/dt9940002293
日期:——
1-bromo-2-[(dimethylamino)methyl]naphthalene to [Pd(dba)2](dba = dibenzylideneacetone). Protection of C(3) with R = SiMe3 resulted in quantitative replacement of the SiMe3 group by palladium. Silicon–oxygen bond cleavage was observed when the substrate with R = OSiMe3 was treated with Pd(O2CMe)2. Palladium bis3-[(dimethylamino)methyl]-2-naphtholate} was obtained quantitatively. Oxidation of several arylpalladium complexes
Photochemical Generation and the Reactivity of <i>o</i>-Naphthoquinone Methides in Aqueous Solutions
作者:Selvanathan Arumugam、Vladimir V. Popik
DOI:10.1021/ja9031924
日期:2009.8.26
efficient (Phi(254) = 0.17 and 0.20) dehydration and the formation of isomeric naphthoquinone methides, 2,3-naphthoquinone-3-methide (1) and 1,2-naphthoquinone-1-methide (2), respectively. In aqueoussolution, naphthoquinone methides 1 and 2 undergo rapid hydration to regenerate starting materials (tau(H2O) (1) = 7.4 ms and tau(H2O) (2) = 4.5 ms at 25 degrees C). The hydration reaction is strongly