Carboxylation and Mitsunobu Reaction of Amines to Give Carbamates: Retention vs Inversion of Configuration Is Substituent-Dependent
作者:Christopher J. Dinsmore、Swati P. Mercer
DOI:10.1021/ol0491080
日期:2004.8.1
A mild method for the synthesis of carbamates from amino alcohols involves sequential carboxylation with carbon dioxide, followed by a Mitsunobu reaction. Unexpectedly, the stereochemical course of the Mitsunobu reaction is dependent on whether the carbamic acid intermediate is N-substituted with hydrogen (retention) or carbon (inversion).
Synthesis of Oxazolidinones by using Carbon Dioxide as a C
<sub>1</sub>
Building Block and an Aluminium‐Based Catalyst
作者:Mani Sengoden、Michael North、Adrian C. Whitwood
DOI:10.1002/cssc.201901171
日期:2019.7.19
Oxazolidinone synthesis through the coupling of carbon dioxide and aziridines was catalysed by an aluminium(salphen) complex at 50–100 °C and 1–10 bar pressure under solvent‐free conditions. The process was applicable to a variety of substituted aziridines, giving products with high regioselectivity. It involved the use of a sustainable and reusable aluminium‐based catalyst, used carbon dioxide as a
A convenient and inexpensive conversion of an aziridine to an oxazolidinone
作者:Matthew T. Hancock、Allan R. Pinhas
DOI:10.1016/s0040-4039(03)01325-x
日期:2003.7
The conversion of an aziridine to the corresponding oxazolidinone using only carbon dioxide and a catalytic amount of lithium iodide is discussed. In all cases, either no reaction occurred or a high yield of product was obtained. HMPA has been added to the reaction mixture, as needed, to drastically improve the regioselectivity. Net retention of stereochemistry between the starting aziridine and the