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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 529777Generated: October 25, 2026

Tetrahydrofuran → Pyrazolo[1,5-a]pyrimidine-3-carboxylic acid [4-(5-chloro-2-difluoromethoxy-phenyl)-2-(5-methyl-hexahydro-pyrrolo[3,4-c]pyrrole-2-carbonyl)-thiazol-5-yl]-amide

https://huagongshe.com/reaction/529777

Reaction equation

Participants

RoleNameHCIDCharge
ReactantTetrahydrofuranHCID 8028—
Reactant1,8-Diazabicyclo(5.4.0)undec-7-eneHCID 81184—
ReactantTris(1,1-dimethylethyl)phosphineHCID 83681—
Reactant2-Methyloctahydropyrrolo(3,4-c)pyrroleHCID 12958533—
ReactantPyrazolo[1,5-a]pyrimidine-3-carboxylic acid [2-bromo-4-(5-chloro-2-difluoromethoxy-phenyl)-thiazol-5-yl]-amideHCID 118531712—
CatalystMolybdenum carbonyl (Mo(CO)6)HCID 98885—
Catalysttrans-Bis(acetato)bis[2-[bis(2-methylphenyl)phosphino]benzyl]dipalladium(II)HCID 11104995—
SolventMethanolHCID 887—
ProductPyrazolo[1,5-a]pyrimidine-3-carboxylic acid [4-(5-chloro-2-difluoromethoxy-phenyl)-2-(5-methyl-hexahydro-pyrrolo[3,4-c]pyrrole-2-carbonyl)-thiazol-5-yl]-amideHCID 1238421478%

Reaction Conditions

Temperature125 °C

Reaction Steps

Pyrazolo[1,5-a]pyrimidine-3-carboxylic acid [2-bromo-4-(5-chloro-2-difluoromethoxy-phenyl)-thiazol-5-yl]-amide (200 mg, 0.4 mmol), 2-methyl-octahydro-pyrrolo[3,4-c]pyrrole (70 mg, 0.56 mmol), Herrmann's catalyst (4.5 mg, 0.0048 mmol), tri-tert-butyl phosphine hydrofluoroborate (3.5 mg, 0.011 mmol), molybdenum hexacarbonyl (53 mg, 0.2 mmol) and DBU (40 μl, 0.27 mmol) were dissolved in THF (2 ml) and heated in a microwave at 125° C. for 15 mins. The residue was dissolved in MeOH and loaded onto an SCX-2 cartridge which had been conditioned with MeOH. After flushing with MeOH, the product was eluted with 2M ammonia in MeOH. The resulting yellow glass was purified by HPLC (MDAP, Method 1). Appropriate fractions were combined and evaporated to afford a yellow solid. The residue was dissolved in MeOH and loaded onto an SCX-2 cartridge which had been conditioned with MeOH. After flushing with MeOH, the product was eluted with 2M ammonia in MeOH to give the title compound as a pale yellow solid (18 mg, 8%). LCMS (Method 5) [M+H]+=574.1, RT=3.06 min. 1H NMR (400 MHz, DMSO-d6) δ: (ppm) 10.88 (s, 1H), 9.42 (dd, 1H, J=1.6, 7.0 Hz), 8.81 (s, 1H), 8.61 (dd, 1H, J=1.5, 4.3 Hz), 7.84 (d, 1H, J=2.6 Hz), 7.73 (dd, 1H, J=2.6, 8.8 Hz), 7.54 (d, 1H, J=8.8 Hz), 7.36 (dd, 1H, J=4.3, 7.0 Hz), 7.22 (t, 1H, J=73.1 Hz), 4.24 (dd, 1H, J=8.6, 12.3 Hz), 4.09 (dd, 1H, J=3.9, 12.3 Hz), 3.80 (dd, 1H, J=8.9, 12.6 Hz), 3.59-3.47 (m, 1H), 3.02-2.92 (m, 1H), 2.88-2.80 (m, 1H), 2.65-2.48 (m, 4H), 2.29 (s, 3H).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS09346815B2
Source datasetuspto-grants-2016_05
ORD IDord-f138fbb4fdda4dcf882c367c53ad3469
Source noteuspto-grants-2016_05