[EN] PROCESS FOR THE DIRECT ALPHA-METHYLENATION OF KETONES<br/>[FR] PROCÉDÉ D'ALPHA-MÉTHYLÉNATION DIRECTE DE CÉTONES
申请人:RHODIA OPERATIONS
公开号:WO2020104398A1
公开(公告)日:2020-05-28
The invention relates to a process for preparing an α-methylene ketone comprising the step of reacting a ketone with formaldehyde in the presence of a catalyst which is an organic compound comprising at least one acid function or the corresponding salt, ester or amide thereof and at least one amine function or the corresponding ammonium salt, or a zwitterion thereof.
Divergent Coupling of β,γ-Unsaturated α-Ketoesters with Simple Olefins: Vinylation and [2 + 2] Cycloaddition
作者:Le Wang、Jian Lv、Sujia Li、Sanzhong Luo
DOI:10.1021/acs.orglett.7b01291
日期:2017.7.7
Catalytic direct conjugate addition and [2 + 2] cycloaddition reactions of β,γ-unsaturated α-ketoesters with simple olefins have been developed, affording vinylation products and functionalized cyclobutanes, respectively, in good yields with high regioselectivity.