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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2277683Generated: October 30, 2026

Isobutyric Acid → HCID 86685977, compound

https://huagongshe.com/reaction/2277683

Reaction equation

Participants

RoleNameHCIDCharge
ReactantIsobutyric AcidHCID 6590—
Reactant1,4-DimethylpyrazoleHCID 136836—
Reactant2-(Dicyclohexylphosphino)-2'-(dimethylamino)biphenylHCID 2734217—
ReactantHCID 86685975HCID 86685975—
Catalystpalladium(II) acetateHCID 167845—
SolventWaterHCID 962—
SolventN-methyl-2-pyrrolidoneHCID 13387—
ProductHCID 86685977HCID 866859779.9%

Reaction Conditions

Temperature100 °C

Reaction Steps

To a stirred solution of 2-(5-bromo-pyridin-3-yl)-6-chloro-3,4-dihydro-2H-isoquinolin-1-one (example 7) (80 mg, 0.25 mmol) and 1,4-dimethyl-1H-pyrazole (23 mg, 0.25 mmol) in NMP (2.0 mL) were added Pd(OAc)2 (2.0 mg, 0.008 mmol), 2-dicyclohexylphosphino-2′-(N,N-dimethylamino)biphenyl (DavePhos) (6.3 mg, 0.016 mmol), Bu4NOAc (153 mg, 0.5 mmol) and isobutyric acid (0.085 mL, 0.08 mmol). The resulting reaction mixture was heated to 100° C. for 6 hours before it was poured into H2O (25 mL) and extracted with EtOAc (2×90 mL). The combined organic layers were washed with brine, dried over anhy. Na2SO4, filtered and concentrated in vacuo to give a crude product which was then purified by prep-HPLC to give title compound (8.7 mg, 9.9%) as a yellow solid. MS: 353.1 (M+H+).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS09133158B2
Source datasetuspto-grants-2015_09
ORD IDord-e8204cb54dde47eebeb4880ba7e2cd04
Source noteuspto-grants-2015_09