that permits ring-closingmetathesis and bifunctional chiral amine (thio)urea-catalyzed Michael addition reactions to proceed in a one-pot fashion. The process offers an alternative approach to the synthesis of structurally diverse chiral cyclopentanes in good yields and good enantioselectivities. A relay strategy is described that permits ring-closingmetathesis and bifunctional chiral amine (thio)urea-catalyzed
A New, Convenient Synthesis of Cyclopropyl Ketones
作者:M. GRIGNON-DUBOIS、J. DUNOGUÈS、R. CALAS
DOI:10.1055/s-1976-24180
日期:——
Synthesis of β-Haloketones by β-Addition Reactions of α,β-Unsaturated Ketones with BX<sub>3</sub>(X = Br, Cl) as Halide Source
作者:Adam Shih-Yuan Lee、Shu-Huei Wang、Yu-Ting Chang
DOI:10.1002/jccs.201300394
日期:2014.3
A series of β‐bromoketones and β‐chloroketones were synthesized by the addition reactions of α,β‐unsaturated ketones under BX3 (X = Br, Cl) and ethylene glycol reaction system. The α,β‐unsaturated ester also was successfully converted to its corresponding β‐bromoester under the reaction condition.