Bai, Zhushuang published the artcileA vinylogous Michael reaction of 2-furanone dimers with α,β-unsaturated nitroolefins for constructing chiral γ,γ-disubstituted butenolides, Synthetic Route of 5153-73-1, the publication is Organic Chemistry Frontiers (2020), 7(19), 2910-2915, database is CAplus.
An efficient bifunctional thiourea-catalyzed asym. vinylogous Michael addition of 2-furanone dimers to α,β-unsaturated nitroolefins was developed to afford functional chiral γ,γ-disubstituted butenolides I [R1 = i-Pr, 2-furyl, Ph, etc.; R2 = Me, Et, n-Pr; R3 = Me, Et] in good yields (up to 95%) with good to excellent stereoselectivity (up to >20:1 dr, 99% ee). DFT calculations were carried out to explain the high stereoselectivity.
Organic Chemistry Frontiers published new progress about 5153-73-1. 5153-73-1 belongs to nitriles-buliding-blocks, auxiliary class Nitrile,Alkenyl,Nitro Compound,Benzene, name is (E)-4-(2-Nitrovinyl)benzonitrile, and the molecular formula is C9H6N2O2, Synthetic Route of 5153-73-1.
Referemce:
https://en.wikipedia.org/wiki/Nitrile,
Nitriles – Chemistry LibreTexts