Electric Literature of 193354-13-1,Some common heterocyclic compound, 193354-13-1, name is 5-Iodoindolin-2-one, molecular formula is C8H6INO, traditional synthetic route has been very mature, but the traditional synthetic route has various shortcomings, such as complicated route, low yield, poor purity, etc, below Introduce a new synthetic route.
Step 1. Synthesis of 5-Methoxycarbonyl-2-oxindole. 5-Iodo-2-oxindole (17 g) was refluxed with 2 g of palladium diacetate, 18.15 g of triethylamine, 150 mL of methanol, 15 mL of dimethylsulfoxide and 2.6 g of DPPP in an atmosphere saturated with carbon monoxide. After 24 hours, the reaction was filtered to remove the catalyst and the filtrate concentrated. The concentrate was chromatographed on a silica gel in 30% ethyl acetate in hexane. The fractions containing product were concentrated and allowed to stand. The precipitated product was collected by vacuum filtration to give 0.8 g (7%) of the title compound as an off-white solid.
The synthetic route of 193354-13-1 has been constantly updated, and we look forward to future research findings.
Reference:
Patent; Sugen, Inc.; US6147106; (2000); A;,
Indoline – Wikipedia,
Indoline | C8H9N – PubChem