Acetamide → N-{5-[4-(2-Trimethylsilanyl-ethoxymethyl)-4,7-dihydro-1-thia-4,5-diaza-cyclopenta[a]pentalen-6-yl]-pyridin-2-yl}-acetamide

Participants

Role	Name	HCID	Charge
Reactant	Acetamide	HCID 178	—
Reactant	Cesium carbonate	HCID 10796	—
Reactant	1,1'-(9,9-Dimethyl-9H-xanthene-4,5-diyl)bis(1,1-diphenylphosphine)	HCID 636044	—
Reactant	6-(6-Bromo-pyridin-3-yl)-4-(2-trimethylsilanyl-ethoxymethyl)-4,7-dihydro-1-thia-4,5-diaza-cyclopenta[a]pentalene	HCID 86699231	—
Catalyst	palladium(II) acetate	HCID 167845	—
Solvent	1,4-Dioxane	HCID 31275	—
Product	N-{5-[4-(2-Trimethylsilanyl-ethoxymethyl)-4,7-dihydro-1-thia-4,5-diaza-cyclopenta[a]pentalen-6-yl]-pyridin-2-yl}-acetamide	HCID 86699232	71%

Reaction Conditions

Temperature	100 °C

Reaction Steps

A mixture of the corresponding intermediate 6-(6-Bromo-pyridin-3-yl)-4-(2-trimethylsilanyl-ethoxymethyl)-4,7-dihydro-1-thia-4,5-diaza-cyclopenta[a]pentalene (0.45 g, 1.0 mmol), acetamide (0.15 g, 2.5 mmol), Cs2CO3 (2 M, 3.0 mL), Xantphos (58 mg, 0.1 mmol) and Pd(OAc)2 (22 mg, 0.1 mmol) in dioxane (5 mL) was heated at 100° C. for 8 hr. The solution was cooled to room temperature and extracted with ethyl acetate. The target product was purified by gravity column chromatography (50% EtOAc in hexane) to give N-{5-[4-(2-Trimethylsilanyl-ethoxymethyl)-4,7-dihydro-1-thia-4,5-diaza-cyclopenta[a]pentalen-6-yl]-pyridin-2-yl}-acetamide as brown solid in 71% yield.

Provenance & Evidence

DOI	10.6084/m9.figshare.5104873.v1
Patent number	US08853207B2
Source dataset	uspto-grants-2014_10
ORD ID	ord-e3c9bc7762cf4e66a031468aa7391508
Source note	uspto-grants-2014_10