Denmark Scott E., Griedel Brian D., Coe Diane M., Schnute Mark E., J. Amer. Chem. Soc., 116 (1994) N 16, S 7026-7043
作者:Denmark Scott E., Griedel Brian D., Coe Diane M., Schnute Mark E.
DOI:——
日期:——
Chemistry of Enoxysilacyclobutanes: Highly Selective Uncatalyzed Aldol Additions
作者:Scott E. Denmark、Brian D. Griedel、Diane M. Coe、Mark E. Schnute
DOI:10.1021/ja00095a004
日期:1994.8
O(Silacyclobuty1) ketene acetals derived from esters, thiol esters, and amides underwent facile aldol addition with a variety of aldehydes at room temperature without the need for catalysts. The uncatalyzed aldol addition reaction of O(silacyclobuty1) ketene acetals displayed the following characteristics: (1) the rate of reaction was highly dependent on the spectator substituent on silicon and the
Synthesis, crystal structure, and NMR investigation of methyl α,α-dimethyl acetate-substituted π-allylpalladium complexes
作者:Ido Schwarz、Jörg Rust、Christian W Lehmann、Manfred Braun
DOI:10.1016/s0022-328x(00)00276-x
日期:2000.6
and the cationic allyl complex 8 were prepared and characterized by NMR spectroscopy as well as crystal structure analyses. The carbonyl group of the carboxylic ester moiety does not form a chelate with the metal atom. The activation enthalpy of a π–σ–π conversion could be determined to be 14.6 kcal mol−1 based on the dynamic NMR spectroscopy of the allylpalladium complex 8.