4-(4-chloro-2-fluorophenyl)-5-(3,8-dimethyl-[1,2,4]triazolo[4,3-a]pyridin-6-yl)-1-ethyl-3-methyl-4,5-dihydropyrrolo[3,4-c]pyrazol-6(1H)-one → (S)-4-(4-chloro-2-fluorophenyl)-5-(3,8-dimethyl-[1,2,4]triazolo[4,3-a]pyridin-6-yl)-1-ethyl-3-methyl-4,5-dihydropyrrolo-[3,4-c]pyrazol-6(1H)-one

Participants

Role	Name	HCID	Charge
Reactant	4-(4-chloro-2-fluorophenyl)-5-(3,8-dimethyl-[1,2,4]triazolo[4,3-a]pyridin-6-yl)-1-ethyl-3-methyl-4,5-dihydropyrrolo[3,4-c]pyrazol-6(1H)-one	HCID 91826378	—
Reactant	tert-butyl 3-(4-(4-chlorophenyl)-5-(3,8-dimethyl-[1,2,4]triazolo[4,3-a]pyridin-6-yl)-3-methyl-6-oxo-5,6-dihydropyrrolo[3,4-c]pyrazol-1(4H)-yl)azetidine-1-carboxylate	HCID 117702723	—
Solvent	Isopropanol	HCID 3776	—
Product	(S)-4-(4-chloro-2-fluorophenyl)-5-(3,8-dimethyl-[1,2,4]triazolo[4,3-a]pyridin-6-yl)-1-ethyl-3-methyl-4,5-dihydropyrrolo-[3,4-c]pyrazol-6(1H)-one	HCID 91826385	—

Reaction Steps

The title compound (52 mg, 47% yield) was obtained enantiomerically pure (>99% ee) after chiral preparative chromatography (system: MGII preparative SFC; column: Chiralpak AD-H, 30×250 mm; mobile phase: scCO2/iPrOH 60:40; flow: 50 mL/min; temperature: 38° C.; detection UV: 220 nm) of the racemic mixture of 4-(4-chloro-2-fluorophenyl)-5-(3,8-dimethyl-[1,2,4]triazolo[4,3-a]pyridin-6-yl)-1-ethyl-3-methyl-4,5-dihydropyrrolo[3,4-c]pyrazol-6(1H)-one (Example 185).

Provenance & Evidence

DOI	10.6084/m9.figshare.5104873.v1
Patent number	US08975417B2
Source dataset	uspto-grants-2015_03
ORD ID	ord-67c829c669fd4cea9fa55d3df56dce53
Source note	uspto-grants-2015_03