A METAL FREE PROCESS FOR THE PREPARATION OF ALPHA-SUBSTITUTED CARBONYL COMPOUNDS FROM ALKENES
The present invention discloses a novel metal free process for the regioselective synthesis of α-substituted carbonyl compounds of formula I from alkene, X is selected from the following compounds (A, B).
-
Page/Page column 20-21; 22
(2017/06/19)
Regioselective oxo-amination of alkenes and enol ethers with N-bromosuccinimide-dimethyl sulfoxide combination: A facile synthesis of α-amino-ketones and esters
An unprecedented conversion of alkenes and enol ethers to the corresponding α-imido carbonyl compounds with excellent regioselectivity and yields has been developed. This oxo-amination process employs readily available N-bromosuccinimide (NBS) and secondary amines as N-sources and dimethyl sulfoxide (DMSO) as the oxidant and also leads to the production of amino alcohols in a single step on reduction, thus broadening the scope of this operationally simple reaction. For the first time, the formation of reactive Me2S+-O-Br species generated by the interaction of NBS with DMSO has been proven.
Superelectrophilic chemistry of amino-nitriles and related substrates
The superacid-promoted Houben/Hoesch reactions of amino-nitriles and related compounds have been studied. The nitriles form dicationic electrophiles and react with benzene in fair to good yields (12-95%). The intermediate iminium ions may also be reduced to the benzylic amines by NaBH4 or H 2.
Raja, Erum K.,Klumpp, Douglas A.
experimental part
p. 4494 - 4497
(2011/07/08)
SYNTHESIS AND STEREOCHEMISTRY OF 2,2,3-TRIMETHYL-5-ARYL-4-AROYLOXYZOLIDINES
cis-2,2,3-Trimethyl-5-aryl-4-aroyloxazolidines were obtained by heating complex boron trifluoride salts of trans-1-methyl-2-aryl-3-aroylaziridines with acetone.The reaction of complex boron trifluoride salts of cis-1-methyl-2-aryl-3-aroylaziridines leads to substituted benzaldehydes and ω-N-methylaminoacetophenones.
Tishchenko, I. G.,Bubel', O. N.,Konovalov, V. A.
p. 29 - 33
(2007/10/02)
Nitrogen mustard analogs. β-Halogeno-, β-alkoxy- and β-acetoxy- β-phenylethylamine derivatives
-
Sadet,Lipszyc,Chenu,et al.
p. 277 - 288
(2007/10/05)
More Articles about upstream products of 35534-19-1