chemical intermediates, but the effective synthesis remains challenging. Herein, the catalytic synthesis of dialkoxymethane products using a molecular catalyst is reported. The catalytic system, comprising the [Ru(triphos)(tmm)] in combination with the Lewis acid Al(OTf)3, enables the direct synthesis of dialkoxymethane products with formic acid as C1 buildingblock in high to excellent turnover numbers
CIDNP study of the photocleavage of benzyl derivatives
作者:G.P. Gardini、J.L. Charlton、J. Bargon
DOI:10.1016/s0040-4039(00)87001-x
日期:1982.1
Evidence of the mechanistic pathways involved in the acetone sensitized homolytic photocleavage of benzyltrialkylammonium salts and other benzyl derivatives is obtained by CIDNP.
Regiospecific Synthesis of N-Alkyl-4- and 5-Substituted Imidazoles
作者:Gideon Shapiro、Berta Gomez-Lor
DOI:10.3987/com-94-6926
日期:——
A facile regiospecific synthesis of 4- and 5-substituted N-alkyl imidazoles has been developed from N-trimethylsilyloxyethyl-imidazole(s). The method combines directed metallation with alkyl triflate mediated imidazole quaternization and SEM group cleavage.