Li, Zhaojing published the artcileAsymmetric Catalytic Synthesis of Hexahydropyrrolo-isoquinolines via Three-Component 1,3-Dipolar-Cycloaddition, Category: catalysis-chemistry, the publication is Chemistry – A European Journal (2021), 27(60), 14841-14845, database is CAplus and MEDLINE.
An asym. three-component 1,3-dipolar cycloaddition of 3,4-dihydroisoquinolines, bromoacetates and ¦Á,¦Â-unsaturated pyrazole amides was realized by using a chiral N,N’-dioxide-Y(OTf)3 complex as the catalyst. The process included a base-promoted formation of dihydroisoquinolium ylides in situ, and a chiral Lewis acid-catalyzed asym. [3+2] cycloaddition with ¦Á,¦Â-unsaturated pyrazole amides. A series of hexahydropyrrolo-isoquinolines I [R = Pr, Ph, 4-BrC6H4, etc.; R1 = Et, OMe, O-tBu, OBn; R2 = H, 5-Br, 6-OMe, etc.] were obtained in moderate to good yields with excellent diastereo- and enantioselectivities.
Chemistry – A European Journal published new progress about 16909-09-4. 16909-09-4 belongs to catalysis-chemistry, auxiliary class Alkenyl,Carboxylic acid,Benzene,Ether, name is (E)-3-(2,4-Dimethoxyphenyl)acrylic acid, and the molecular formula is C11H12O4, Category: catalysis-chemistry.
Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia