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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2059643Generated: October 30, 2026

Diisopropylethylamine → 1-[1-(4-Chloro-3-methyl-benzyl)-piperidin-4-yl]-5-oxo-pyrrolidine-2-carboxylic acid [3-bromo-5-(1-methyl-1H-tetrazol-5-yl)-phenyl]-amide

https://huagongshe.com/reaction/2059643

Reaction equation

Participants

RoleNameHCIDCharge
ReactantDiisopropylethylamineHCID 81531—
ReactantMethanaminium, N-((dimethylamino)(3H-1,2,3-triazolo(4,5-b)pyridin-3-yloxy)methylene)-N-methyl-, hexafluorophosphate(1-) (1:1)HCID 9886157—
Reactant3-Bromo-5-(1-methyl-1H-tetrazol-5-yl)-phenylamineHCID 66733304—
Reactant1-[1-(4-Chloro-3-methyl-benzyl)-piperidin-4-yl]-5-oxo-pyrrolidine-2-carboxylic acidHCID 66733360—
SolventDimethylformamideHCID 6228—
Product1-[1-(4-Chloro-3-methyl-benzyl)-piperidin-4-yl]-5-oxo-pyrrolidine-2-carboxylic acid [3-bromo-5-(1-methyl-1H-tetrazol-5-yl)-phenyl]-amideHCID 66735042—

Reaction Steps

To a solution of 1-[1-(4-Chloro-3-methyl-benzyl)-piperidin-4-yl]-5-oxo-pyrrolidine-2-carboxylic acid as DIPEA salt (2.6 g) in DMF (100 ml) was added DIPEA (2.1 g), and HATU (4 g). 3-Bromo-5-(1-methyl-1H-tetrazol-5-yl)-phenylamine (1.4 g) was added and the reaction stirred overnight at rt. The reaction mixture was filtered and the filtrate partitioned between water and EtOAc. The organic layer was separated, dried and concentrated in vacuum and the residue purified by flash chromatography (DCM:MeOH 100:0 to 95:5 gradient) to give the title compound (400 mg). Rf=0.19 (95:5 DCM:MeOH).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08278302B2
Source datasetuspto-grants-2012_10
ORD IDord-caddde574d7a48cd9cac72b879b95b9f
Source noteuspto-grants-2012_10