Dichloromethane → tert-butyl 4-(3-(6-(1H-1,2,4-triazol-1-yl)pyridin-3-yl)-7-(bis((2-(trimethylsilyl)ethoxy)methyl)amino)pyrazolo[1,5-a]pyrimidin-5-yl)piperidine-1-carboxylate

https://huagongshe.com/reaction/2047134

Participants

Role	Name	HCID	Charge
Reactant	Dichloromethane	HCID 6344	—
Reactant	Sodium Carbonate	HCID 10340	—
Reactant	5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-2-(1H-1,2,4-triazol-1-yl)pyridine	HCID 59243329	—
Reactant	Tert-butyl 4-(7-(bis((2-(trimethylsilyl)ethoxy)methyl)amino)-3-iodopyrazolo[1,5-a]pyrimidin-5-yl)piperidine-1-carboxylate	HCID 66584511	—
Catalyst	Bis(cyclopenta-1,4-dien-1-yl(diphenyl)phosphane);dichloropalladium;iron(2+)	HCID 178418228	—
Solvent	1,2-Dimethoxyethane	HCID 8071	—
Product	tert-butyl 4-(3-(6-(1H-1,2,4-triazol-1-yl)pyridin-3-yl)-7-(bis((2-(trimethylsilyl)ethoxy)methyl)amino)pyrazolo[1,5-a]pyrimidin-5-yl)piperidine-1-carboxylate	HCID 67494194	64.1%

Reaction Conditions

Temperature	80 °C

Reaction Steps

To a pressure tube were charged tert-butyl 4-(7-(bis((2-(trimethylsilyl)ethoxy)methyl)amino)-3-iodopyrazolo[1,5-a]pyrimidin-5-yl)piperidine-1-carboxylate (563 mg, 0.8 mmol), 5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-2-(1H-1,2,4-triazol-1-yl)pyridine (287 mg, 1.1 mmol), PdCl2(dppf)2.CH2Cl2 (29 mg, 0.04 mmol), DME (6 mL) and 2M Na2CO3 (2 mL). The resulting mixture was briefly degassed with Argon; the tube was capped, and heated with stirring under 80° C. overnight. After cooling, solvent was removed. The residue was diluted with EtOAc (20 ml), and organic layer was isolated, washed with brine and dried (MgSO4). After concentration under reduced pressure, the residue was purified on silica gel eluting with EtOAc/Hexanes (0-50%) to provide the title compound (370 mg, 64%).

Provenance & Evidence

DOI	10.6084/m9.figshare.5104873.v1
Patent number	US08591943B2
Source dataset	uspto-grants-2013_11
ORD ID	ord-6bb25a6ca3594219b8fd8e2816159af2
Source note	uspto-grants-2013_11