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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1259638Generated: October 27, 2026

Isatin → 1-(diphenylmethyl)-5-methyl-1H-indole-2,3-dione

https://huagongshe.com/reaction/1259638

Reaction equation

Participants

RoleNameHCIDCharge
ReactantIsatinHCID 7054—
Reactant5-MethylisatinHCID 11840—
ReactantBromodiphenylmethaneHCID 236603—
Reactant(2-Bromoethyl)cyclopropaneHCID 22636989—
Product1-(diphenylmethyl)-5-methyl-1H-indole-2,3-dioneHCID 66642678—

Reaction Steps

Following the procedure as described in PREPARATION 2A, and making non-critical variations to replace isatin with 5-methylisatin, and (2-bromoethyl)cyclopropane with 1,1′-(bromomethylene)dibenzene, the title compound was obtained (74%) as a bright orange solid: 1H NMR (300 MHz, CDCl3) δ 7.42-7.26 (m, 11H), 7.09 (d, 1H), 6.95 (s, 1H), 6.37 (d, 1H), 2.24 (s, 3H).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08466188B2
Source datasetuspto-grants-2013_06
ORD IDord-8665f4163c774243b3bea929ccdda7fc
Source noteuspto-grants-2013_06