Gatzenmeier, Tim published the artcileAsymmetric Lewis acid organocatalysis of the Diels-Alder reaction by a silylated C-H acid, HPLC of Formula: 1772-76-5, the publication is Science (Washington, DC, United States) (2016), 351(6276), 949-952, database is CAplus and MEDLINE.
Silylium ion equivalent have shown promise as Lewis acid catalysts for a range of important C-C bond-forming reactions. Here we describe chiral C-H acids that upon in situ silylation, generate silylium-carbanion pairs, which are extremely active Lewis acid catalysts for enantioselective Diels-Alder reactions of cinnamates with cyclopentadiene. Enantiomeric ratios of up to 97:3 and diastereomeric ratios of more than 20:1 are observed across a diverse set of substitution patterns with 1 mol percent (mol%) of C-H acid catalyst and 10 mol% of a silylating reagent. The results show promise for broad applications of such C-H acid-derived silylium ion equivalent in asym. Lewis acid catalysis.
Science (Washington, DC, United States) published new progress about 1772-76-5. 1772-76-5 belongs to catalysis-chemistry, auxiliary class Benzenes, name is (E)-3-(3-Nitrophenyl)acrylic acid, and the molecular formula is C9H7NO4, HPLC of Formula: 1772-76-5.
Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia