Tert-butyl cis-(3-carbamoylcyclohexyl)carbamate → tert-butyl N-[(1R,3S)-3-[[5-fluoro-4-(5,6,7,8-tetrahydro-4H-pyrazolo[1,5-a]azepin-3-yl)-2-pyridinyl]carbamoyl]cyclohexyl]carbamate

HRID 517

Reaction equation

HRID 517 reaction equation
CC(C)(C)OC(=O)N[C@@H]1CCC[C@H](C(N)=O)C1.Fc1cnc(Cl)cc1-c1cnn2c1CCCCC2>C1COCCO1.CC1(C)c2cccc(P(c3ccccc3)c3ccccc3)c2Oc2c(P(c3ccccc3)c3ccccc3)cccc21.O=C([O-])[O-].[Cs+].[Cs+].[Pd].c1ccc(P(c2ccccc2)c2ccccc2)cc1.c1ccc(P(c2ccccc2)c2ccccc2)cc1.c1ccc(P(c2ccccc2)c2ccccc2)cc1.c1ccc(P(c2ccccc2)c2ccccc2)cc1>CC(C)(C)OC(=O)N[C@@H]1CCC[C@H](C(=O)Nc2cc(-c3cnn4c3CCCCC4)c(F)cn2)C1

Participants

7

Reactant 2

HCID 71279992Tert-butyl cis-(3-carbamoylcyclohexyl)carbamateHCID 1241552833-(2-chloro-5-fluoro-4-pyridinyl)-5,6,7,8-tetrahydro-4H-pyrazolo[1,5-a]azepine

Product 1

HCID 124164059tert-butyl N-[(1R,3S)-3-[[5-fluoro-4-(5,6,7,8-tetrahydro-4H-pyrazolo[1,5-a]azepin-3-yl)-2-pyridinyl]carbamoyl]cyclohexyl]carbamateYield 72.45%

Reagents, catalysts & solvents 4

HCID 10796Cesium carbonateReagentHCID 6360441,1'-(9,9-Dimethyl-9H-xanthene-4,5-diyl)bis(1,1-diphenylphosphine)CatalystHCID 11979704Tetrakis(triphenylphosphine)palladiumCatalystHCID 312751,4-DioxaneSolvent

Conditions

Temperature
120 °C

Procedure

Tetrakis(triphenylphosphine)palladium(0) (0.304 g, 0.26 mmol) was added to 3-(2-chloro-5-fluoropyridin-4-yl)-5,6,7,8-tetrahydro-4H-pyrazolo[1,5-a]azepine (0.700 g, 2.63 mmol), tert-butyl ((1R,3S)-3-carbamoylcyclohexyl)carbamate (0.638 g, 2.63 mmol) and 9,9-dimethyl-4,5-bis(diphenylphosphino)xanthene (0.305 g, 0.53 mmol) and Cesium carbonate (2.58 g, 7.90 mmol) in 1,4-dioxane (10 mL)Degassed for 5 mins under nitrogen and the resulting suspension was stirred at 120 °C for 17 hours in the microwave reactor. The reaction mixture was partitioned between water (20ml) and ethyl acetate (100ml) filtered and separated. The organics were absorbed onto silica and purified by flash silica chromatography, elution gradient 1:1 EtOAc in heptane. Pure fractions were evaporated to dryness to afford tert-butyl ((1R,3S)-3-((5-fluoro-4-(5,6,7,8-tetrahydro-4H-pyrazolo[1,5-a]azepin-3-yl)pyridin-2-yl)carbamoyl)cyclohexyl)carbamate (0.900 g, 72.4 %) as a white solid. Product is crude so used directly in the next step.

Sources & evidence

ORD record
ord-5545e57a105549059abb855326d6ce2b
Source dataset
750 AstraZeneca ELN dataset
Original link
View source

Linked notes

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