Potassium Phosphate, Tribasic → HCID 86684346, compound

Participants

Role	Name	HCID	Charge
Reactant	Potassium Phosphate, Tribasic	HCID 62657	—
Reactant	Sodium Acetate	HCID 517045	—
Reactant	(2-(1-oxo-3,4,6,7,8,9-hexahydropyrazino[1,2-a]indol-2(1H)-yl)-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridin-3-yl)methyl acetate	HCID 86684143	—
Reactant	HCID 86684344	HCID 86684344	—
Catalyst	Bis(cyclopenta-1,4-dien-1-yl(diphenyl)phosphane);dichloropalladium;iron(2+)	HCID 178418228	—
Solvent	Water	HCID 962	—
Solvent	Acetonitrile	HCID 6342	—
Product	HCID 86684346	HCID 86684346	34.2%

Reaction Conditions

Temperature	100 °C

Reaction Steps

A 50-mL round-bottomed flask equipped with a reflux condenser was charged with 189g (180 mg, 0.43 mmol), 3-(acetoxymethyl)-2-(1-oxo-3,4,6,7,8,9-hexahydropyrazino[1,2-a]indol-2(1H)-yl)pyridin-4-ylboronic acid 113i (165 mg, 0.43 mmol), Pd(dppf)Cl2 (35 mg, 0.043 mmol), sodium acetate (71 mg, 0.86 mmol), K3PO4 (194 mg, 0.86 mmol), acetonitrile (10 mL), and water (0.5 mL). After three cycles of vacuum/argon flush, the mixture was heated at 100° C. for 3 h. After this time the reaction was filtered and the filtrate was concentrated under reduced pressure. The resulting residue was purified by silica-gel column chromatography eluting with 40:1 dichloromethane/methanol to afford 189h as a yellow solid (100 mg, 34%). MS-ESI: [M+H]+ 680.3.

Provenance & Evidence

DOI	10.6084/m9.figshare.5104873.v1
Patent number	US09238655B2
Source dataset	uspto-grants-2016_01
ORD ID	ord-13e71769c64e4e8b861d47b2325f0c88
Source note	uspto-grants-2016_01