I found the field of Chemistry very interesting. Saw the article Rh(i)-Catalyzed [3+2] annulation reactions of cyclopropenones with amides published in 2019.0. Recommanded Product: 62-23-7, Reprint Addresses Chatani, N (corresponding author), Osaka Univ, Dept Appl Chem, Fac Engn, Suita, Osaka 5650871, Japan.. The CAS is 62-23-7. Through research, I have a further understanding and discovery of 4-Nitrobenzoic acid
Rh(I)-Catalyzed [3+ 2] annulation reactions of cyclopropenones with amides are reported. The reaction provides a direct approach for producing highly substituted alpha, beta-unsaturated gamma-lactam derivatives. The presence of an N(sp(2)) atom in the N-alkyl group of the amide, such as the 2-pyridinylmethyl or 8-aminoquinonyl group, is essential for the success of the reaction.
About 4-Nitrobenzoic acid, If you have any questions, you can contact Haito, A; Chatani, N or concate me.. Recommanded Product: 62-23-7
Reference:
Phthalazine – Wikipedia,
,Phthalazine | C8H6N2 – PubChem