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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 843151Generated: October 29, 2026

Hydrochloric Acid → HCID 136045961, compound

https://huagongshe.com/reaction/843151

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrochloric AcidHCID 313—
ReactantDabcoHCID 9237—
ReactantHCID 53887906HCID 53887906—
CatalystChlorotris(triphenylphosphine)rhodium(I)HCID 84599—
SolventEthanolHCID 702—
ProductHCID 136045961HCID 13604596184.9%

Reaction Steps

2-(4-Allyloxy-3-methyl-benzofuran-2-yl)-thiazole-4-carboxylic acid ethyl ester (28 mg) in 80% aqueous ethanol (6 ml) was stirred in the presence of chlorotris(triphenylphosphine)rhodium (3 mg) and triethylenediamine (2 mg) at 90° C. for 6 hours. The reaction mixture was poured into 1N aqueous hydrochloric acid and extracted with ethyl acetate. The combined organic extracts were washed with brine and dried over magnesium sulfate. Evaporation of the solvent under reduced pressure gave 2-(4-hydroxy-3-methyl-benzofuran-2-yl)-thiazole-4-carboxylic acid ethyl ester as a white solid (21 mg). FAB-MS: m/z 304 (MH+).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06376491B1
Source datasetuspto-grants-2002_04
ORD IDord-b8cae657f3cf4449ba2ab910484a972a
Source noteuspto-grants-2002_04