Preparation of N-Isopropylidene-N'-2-Nitrobenzenesulfonyl Hydrazine (IPNBSH) and Its Use in Palladium-catalyzed Synthesis of Monoalkyl Diazenes. Synthesis of 9-Allylanthracene
Bidentate Ligands by Self-Assembly through Hydrogen Bonding: A General Room Temperature/Ambient Pressure Regioselective Hydroformylation of Terminal Alkenes
room temperature/ambient pressure regioselective hydroformylation of terminalalkenes with low catalyst loadings in good activity. The generality of this catalyst under these conditions was demonstrated for a wide range of structurally diverse alkenes equipped with many important functional groups. Thus, this practical and highly selective hydroformylation protocol, which omits the need for special pressure
Regioselective Wacker Oxidation of Internal Alkenes: Rapid Access to Functionalized Ketones Facilitated by Cross-Metathesis
作者:Bill Morandi、Zachary K. Wickens、Robert H. Grubbs
DOI:10.1002/anie.201303587
日期:2013.9.9
Wacka wacka: The title reaction makes use of a wide range of directing groups (DG) to enable the highly regioselective oxidation of alkenes, and occurs predictably at the distal position. Both E and Z alkenes afford valuable functionalized ketones and cross‐metathesis was shown to facilitate the preparation of the starting materials. BQ=benzoquinone.
Potassium hydride in paraffin: a useful base for Williamson ether synthesis
作者:Haihong Huang、Christopher G. Nelson、Douglass F. Taber
DOI:10.1016/j.tetlet.2010.04.129
日期:2010.7
A procedure for the preparation of potassium hydride in paraffin from potassium metal has been developed. The KH (P) so produced proved to be an efficient base for the Williamson ether synthesis. (C) 2010 Elsevier Ltd. All rights reserved.
DIRECT STEREOSPECIFIC SYNTHESIS OF UNPROTECTED AZIRIDINES FROM OLEFINS
申请人:ESS Daniel Halsell
公开号:US20160340305A1
公开(公告)日:2016-11-24
A method for the direct stereospecific conversion of structurally diverse mono-, di-, tri- and tetra-substituted olefins to N—H, N-alkyl, N-cycloalkyl, or N-aralkyl aziridines using a hydroxylamine amination agent with transition metal catalyst. The method is operationally simple (i.e., one-pot), scalable and fast at ambient temperature.