Hydrochloric Acid → rac-(2R,3S,4R,5S)-3-(3-chloro-2-fluoro-phenyl)-4-(4-chloro-2-fluoro-phenyl)-4-cyano-5-(2-ethyl-2-hydroxymethyl-butyl)-pyrrolidine-2-carboxylic acid ((S)-3,4-dihydroxy-butyl)-amide

Participants

Role	Name	HCID	Charge
Reactant	Hydrochloric Acid	HCID 313	—
Reactant	Diisopropylethylamine	HCID 81531	—
Reactant	Methanaminium, N-((dimethylamino)(3H-1,2,3-triazolo(4,5-b)pyridin-3-yloxy)methylene)-N-methyl-, hexafluorophosphate(1-) (1:1)	HCID 9886157	—
Reactant	2-[(4S)-2,2-dimethyl-1,3-dioxolan-4-yl]ethan-1-amine	HCID 28293777	—
Reactant	HCID 86640403	HCID 86640403	—
Solvent	Dichloromethane	HCID 6344	—
Solvent	Tetrahydrofuran	HCID 8028	—
Product	rac-(2R,3S,4R,5S)-3-(3-chloro-2-fluoro-phenyl)-4-(4-chloro-2-fluoro-phenyl)-4-cyano-5-(2-ethyl-2-hydroxymethyl-butyl)-pyrrolidine-2-carboxylic acid ((S)-3,4-dihydroxy-butyl)-amide	HCID 86640402	10.2%

Reaction Steps

In a manner similar to the method described in Examples 42c and 42d, rac-(2R,3S,4R,5S)-3-(3-chloro-2-fluoro-phenyl)-4-(4-chloro-2-fluoro-phenyl)-4-cyano-5-(2-ethyl-2-hydroxymethyl-butyl)-pyrrolidine-2-carboxylic acid trifluoroacetic acid prepared in Example 111c (1.1 g, 1.8 mmol) was reacted with 2-((S)-2,2-dimethyl-[1,3]dioxolan-4-yl)-ethylamine (0.78 g, 5 mmol), HATU (1.2 g, 3 mmol) and iPr2NEt (1.6 mL, 9 mmol) in CH2Cl2 at room temperature for 20 h, then reacted with aqueous HCl solution in tetrahydrofuran at room temperature for 2 h to give rac-(2R,3S,4R,5S)-3-(3-chloro-2-fluoro-phenyl)-4-(4-chloro-2-fluoro-phenyl)-4-cyano-5-(2-ethyl-2-hydroxymethyl-butyl)-pyrrolidine-2-carboxylic acid ((S)-3,4-dihydroxy-butyl)-amide as a white solid (0.11 g, 10%).

Provenance & Evidence

DOI	10.6084/m9.figshare.5104873.v1
Patent number	US08354444B2
Source dataset	uspto-grants-2013_01
ORD ID	ord-79e1b375e27f41c7a65c23fef83584dc
Source note	uspto-grants-2013_01