Rapid reductive-carboxylation of secondary amines. One pot synthesis of tertiary N-methylated amines
作者:Siya Ram、Richard E. Ehrenkaufer
DOI:10.1016/s0040-4039(00)98209-1
日期:1985.1
Various tertiary N-methylated amines were synthesized by using a new reductive-carboxylation approach. Secondary amines, on carboxylation with carbon dioxide under moderate reaction conditions, afforded their corresponding carbamate esters, which, on lithiumaluminumhydride reduction, gave desired tertiary N-methylated amines in high yield.
[EN] SEMI-SYNTHETIC ANALOGUES OF EPIPOLYTHIODIOXOPIPERAZINE ALKALOIDS<br/>[FR] ANALOGUES SEMI-SYNTHÉTIQUES D'ALCALOÏDES D'ÉPIPOLYTHIODIOXOPIPÉRAZINE
申请人:OHIO STATE INNOVATION FOUNDATION
公开号:WO2020237169A1
公开(公告)日:2020-11-26
Disclosed herein are compounds, compositions, and methods for inhibiting a histone methyltransferase. The compounds are verticillin derivatives that exhibit anti-proliferative activity against cancer cells. The compounds, compositions, and methods can be used to treat a subject with cancer.
Copper-Catalyzed Coupling of Amines with Carbazates: An Approach to Carbamates
作者:Song-Ning Wang、Guo-Yu Zhang、Adedamola Shoberu、Jian-Ping Zou
DOI:10.1021/acs.joc.1c01031
日期:2021.7.2
A new approach for the preparation of carbamates via the copper-catalyzed cross-coupling reaction of amines with alkoxycarbonyl radicals generated from carbazates is described. This environmentally friendly protocol takes place under mild conditions and is compatible with a wide range of amines, including aromatic/aliphatic and primary/secondary substrates.
character (aliphatic and aromaticamines, alcohoxydes, phenoxides, thiolates) are compared with regard to nucleophilic substitutions on dimethyl carbonate (DMC), using different reaction conditions. Results are well in agreement with the Hard−Soft Acid−Base (HSAB) theory. Accordingly, the high selectivity of monomethylation of CH2 acidic compounds and primaryaromaticamines with DMC can be explained
<i>N</i>-Methylation and Trideuteromethylation of Amines via Magnesium-Catalyzed Reduction of Cyclic and Linear Carbamates
作者:Marc Magre、Marcin Szewczyk、Magnus Rueping
DOI:10.1021/acs.orglett.0c00988
日期:2020.4.17
A new reduction of carbamates to N-methyl amines is presented. The magnesium-catalyzed reduction reaction allows the conversion of cyclic and linear carbamates, including N-Boc protected amines, into the corresponding N-methyl amines and amino alcohols which are of significant interest due to their presence in many biologically active molecules. Furthermore, the reduction can be extended to the formation