Sakharov, Pavel A. published the artcileRegiodivergent Synthesis of Butenolide-Based ¦Á- and ¦Â-Amino Acid Derivatives via Base-Controlled Azirine Ring Expansion, Product Details of C8H7NO4, the publication is Organic Letters (2020), 22(8), 3023-3027, database is CAplus and MEDLINE.
A series of 5-aminobutenolides I [R1 = Me, Ph, 4-ClC6H4, 3,4-(MeO)2C6H3, etc.; R2 = MeO, 1-pyrrolidinyl; R3 = MeO2C, Ph, 4-O2NC6H4, 2-thienyl, etc.] and II (R1 = MeO2C, Ph, 4-BrC6H4, etc.; R2 = MeO, Ph, 1-pyrrolidinyl; R3 = MeO2C, 4-ClC6H4, 4-O2NC6H4) has been synthesized from 2-bromo-2H-azirine-2-carboxylic esters/amides III and arylacetic acids R3CH2CO2H. The reaction regioselectivity can be switched by a change of the basic catalyst, making it possible to prepare both butenolide-based ¦Á- and ¦Â-amino acid derivatives I and II. The change in the regioselectivity is interpreted in terms of the stability and reactivity of the enolates formed during the SN2‘ substitution of the bromine in the azirine by the carboxylate ion.
Organic Letters published new progress about 104-03-0. 104-03-0 belongs to catalysis-chemistry, auxiliary class Nitro Compound,Carboxylic acid,Benzene, name is 4-Nitrophenylacetic acid, and the molecular formula is C8H7NO4, Product Details of C8H7NO4.
Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia