The Catalytic Asymmetric Mukaiyama-Michael Reaction of Silyl Ketene Acetals with α,β-Unsaturated Methyl Esters
作者:Tim Gatzenmeier、Philip S. J. Kaib、Julia B. Lingnau、Richard Goddard、Benjamin List
DOI:10.1002/anie.201712088
日期:2018.2.23
α,β‐Unsaturated esters are readily available but challenging substrates to activate in asymmetric catalysis. We now describe an efficient, general, and highly enantioselective Mukaiyama–Michael reaction of silylketeneacetals with α,β‐unsaturated methyl esters that is catalyzed by a silylium imidodiphosphorimidate (IDPi) Lewis acid.
Synthesis of β-<i>N</i>-Phenylamino Alcohols and α-<i>N</i>-Phenylamino Acids via Reduction of the Adducts of Silyl Enol Ethers and Bis-silyl Ketene Acetals with Nitrosobenzene
作者:Tadashi Sasaki、Kohki Mori、Masatomi Ohno
DOI:10.1055/s-1985-31177
日期:——
SASAKI, TADASHI;MORI, KOHKI;OHNO, MASATOMI, SYNTHESIS, BRD, 1985, N 3, 280-282