Photocatalytic Redox-Neutral Alkoxyacylation of Alkenes
作者:Fu-Tong Cen、Yu Sun、Jian-Ping Qu、Yan-Biao Kang
DOI:10.1021/acs.orglett.3c03583
日期:2023.12.22
blocks in organic synthesis. By utilizing CBZ6, with an oxidative potential of −2.16 V (vs the saturated calomel electrode), as a redox-neutral photocatalyst, alkoxyacylation of olefins was accomplished under the irradiation of visible light via a cationic intermediate. It involves the addition of an acyl radical to olefin to form a radical intermediate and the following oxidation of the radical intermediate
One-Pot Enol Silane Formation-Mukaiyama Aldol-Type Addition to Dimethyl Acetals Mediated by TMSOTf
作者:C. Wade Downey、Miles W. Johnson、Kathryn J. Tracy
DOI:10.1021/jo8001084
日期:2008.4.1
Various ketones, esters, amides, and thioesters add in high yield to dimethyl acetals in the presence of silyl trifluoromethanesulfonates and an amine base. Acetals derived from aryl, unsaturated, and aliphatic aldehydes are all effective substrates. The reaction proceeds in a single reaction flask, with no purification of the intermediate enolsilane necessary.