《Bi(OAc)3/chiral phosphoric acid catalyzed enantioselective allylation of isatins》 was published in Chemical Communications (Cambridge, United Kingdom) in 2020. These research results belong to Wang, Jie; Zhang, Qingxia; Li, Yao; Liu, Xiangshuai; Li, Xin; Cheng, Jin-Pei. COA of Formula: Br3In The article mentions the following:
An efficient protocol for construction of chiral 3-allyl-3-hydroxyoxindoles I (R = 4-Cl, 5-Br, 6-F, etc.; R1 = Me, Ph, naphthalen-1-ylmethyl, etc.) via the enantioselective allylation reaction of isatins II and allylboronates CH2=CH(R2)C(R3)(R4)B(-OC(CH3)2C(CH3)2O-) (R2 = R3 = R4 = H, Me) catalyzed by a simple binary acid Bi(OAc)3/chiral phosphoric acid system under mild conditions was disclosed. The synthetic utility of this strategy has been demonstrated through the formal synthesis of ent-CPC-1. In the experiment, the researchers used many compounds, for example, Indium(III) bromide(cas: 13465-09-3COA of Formula: Br3In)
Indium(III) bromide(cas: 13465-09-3) is used in organic synthesis as a water tolerant Lewis acid. It efficiently catalyzes the three-component coupling of β-keto esters, aldehydes and urea (or thiourea) to afford the corresponding dihydropyrimidinones.COA of Formula: Br3In
Referemce:
Bromide – Wikipedia,
bromide – Wiktionary