Scope of the Suzuki−Miyaura Aminoethylation Reaction Using Organotrifluoroborates
摘要:
Potassium beta-aminoethyltrifluoroborates were prepared in good yields via hydroboration of the corre- sponding enecarbamates using the Snieckus hydroborating reagent. A wide variety of phenethylamines containing a potentially free primary amine after appropriate deprotection have been successfully prepared in good yield using these organotrifluoroborates as partners in Suzuki-Miyaura coupling with aryl bromides, iodides, and triflates.
Efficient Cs2CO3-promoted solution and solid phase synthesis of carbonates and carbamates in the presence of TBAI
作者:Ralph N Salvatore、Feixia Chu、Advait S Nagle、Elona A Kapxhiu、Richard M Cross、Kyung Woon Jung
DOI:10.1016/s0040-4020(02)00286-7
日期:2002.4
Novel solution and solid-phase methods for the synthesis of carbonates and carbamates were developed using cesium bases and TBAI via a three-component coupling. Cesium carbonate not only promoted successful carbonylations of alcohols and carbamations of amines, but also suppressed common side reactions traditionally seen using existing protocols. Various alcohols and amines were examined, using a wide
Carbamate Synthesis Using a Shelf‐Stable and Renewable C
<sub>1</sub>
Reactant
作者:Zoltán Dobi、B. Narendraprasad Reddy、Evelien Renders、Laurent Van Raemdonck、Carl Mensch、Gilles De Smet、Chen Chen、Charles Bheeter、Sergey Sergeyev、Wouter A. Herrebout、Bert U. W. Maes
DOI:10.1002/cssc.201900406
日期:2019.7.5
4‐Propylcatechol carbonate is a shelf‐stable, renewable C1 reactant. It is easily prepared from renewable 4‐propylcatechol (derived from wood) and dimethyl carbonate (derived from CO2) using a reactive distillation system. In this work, the 4‐propylcatechol carbonate is used for the two‐step synthesis of carbamates under mild reaction conditions. In the first step, 4‐propylcatechol carbonate is treated