59106-33-1Relevant articles and documents
Stereoselective Halo-Succinimide Facilitated α-Halogenations of Substituted α-Trialkylsilyl-β-Substituted-α,β-Unsaturated Esters
Jennings, Michael P.,Probasco, Kristina C.
, p. 8945 - 8954 (2021/07/20)
The NXS (X = Cl, Br)-mediated halogenation of a series of (E)-α-trimethylsilyl-β-alkyl(aryl)-α,β-unsaturated esters in dimethylformamide (DMF) has furnished (Z)-β-substituted-α-halogenated-α,β-unsaturated ester products in moderate to high isolated yields (58-90%) with dr values of >20:1 coupled with the inversion of olefin stereochemistry. The reaction process was hypothesized to include an initial halonium cation intermediate, followed by regioselective ring opening with DMF. Subsequentanti-E2-type concomitant elimination allowed for the stereoselective formation of the product vinylic bromo-and chloroesters.
Transition metal-free diastereospecific synthesis of (Z)-2-arylidene-2,3-dihydrobenzo[b][1,4]dioxines by reaction of (Z)-1,2-dibromo-3-aryl-2-propenes with catechols
Beifuss, Uwe,Bharatam, Prasad V.,Conrad, Jürgen,Frey, Wolfgang,Rekowski, Szymon P.,Wani, Aabid A.
, (2020/09/18)
A transition metal-free, diastereospecific reaction between substituted (Z)-1,2-dibromo-3-phenyl-2-propenes and substituted catechols using Cs2CO3 as a base at 140 °C for 18 h delivers exclusively substituted (Z)-2-arylidene-2,3-dihy
Chemical fixation of carbon dioxide by copper catalyzed multicomponent reactions for oxazolidinedione syntheses
Sharma, Siddharth,Singh, Ajay K.,Singh, Devendra,Kim, Dong-Pyo
supporting information, p. 1404 - 1407 (2015/03/18)
The quest to reduce greenhouse gases has triggered the development of new chemical fixation of carbon dioxide. Given the importance of CO2 based transformation chemistry, we demonstrate the fixation of CO2 for oxazolidinedione synthesis via a novel multicomponent synthesis. In the presence of a catalytic amount of Cu2O, various 2-bromo-3-phenylacrylic acid derivatives reacted with CO2 and amines are transformed to the corresponding oxazolidinedione derivatives in high yields. This journal is
