I found the field of Chemistry very interesting. Saw the article Organocatalytic asymmetric Michael addition between 3-subsituted oxindoles and enals catalyzed by camphor sulfonyl hydrazine published in 2019.0. Recommanded Product: 4-Nitrobenzoic acid, Reprint Addresses Chen, LY; Li, Y (corresponding author), Shanghai Univ Engn Sci, Coll Chem & Chem Engn, 333 Longteng Rd, Shanghai 201620, Peoples R China.. The CAS is 62-23-7. Through research, I have a further understanding and discovery of 4-Nitrobenzoic acid
Organocatalytic asymmetric Michael addition between 3-substituted oxindoles and enals catalyzed by chiral camphor sulfonyl hydrazines (CaSHs) has been developed. A wide range of 3-substituted oxindoles and enals were successfully used, giving the corresponding 3,3-disubstituted oxindoles containing vicinal stereogenic carbon centers in good yields with good to excellent enantioselectivities and moderate to good diastereoselectivities (up to 89% yield, 99% ee and 99 : 1 dr).
Recommanded Product: 4-Nitrobenzoic acid. About 4-Nitrobenzoic acid, If you have any questions, you can contact Cheng, WF; Chen, LY; Xu, FF; Lin, WY; Ren, XR; Li, Y or concate me.
Reference:
Phthalazine – Wikipedia,
,Phthalazine | C8H6N2 – PubChem