Yang, Wen published the artcileChiral squaramide-catalyzed highly diastereo- and enantioselective direct Michael addition of nitroalkanes to nitroalkenes, Safety of 1,2-Dimethoxy-4-(2-nitrovinyl)benzene, the publication is Chemical Communications (Cambridge, United Kingdom) (2011), 47(47), 12706-12708, database is CAplus and MEDLINE.
An efficient highly diastereo- and enantioselective direct Michael addition of nitroalkanes to nitroalkenes catalyzed by chiral squaramide catalyst has been developed. This organocatalytic reaction with a low catalyst loading (2 mol%) proceeded well to afford synthetically useful 1,3-dinitro compounds in high yields with high diastereoselectivities (up to 95:5 dr) and excellent enantioselectivities (up to 97% ee).
Chemical Communications (Cambridge, United Kingdom) published new progress about 4230-93-7. 4230-93-7 belongs to catalysis-chemistry, auxiliary class Alkenyl,Nitro Compound,Benzene,Ether, name is 1,2-Dimethoxy-4-(2-nitrovinyl)benzene, and the molecular formula is C3H6BrNaO3S, Safety of 1,2-Dimethoxy-4-(2-nitrovinyl)benzene.
Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia