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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1623993Generated: October 31, 2026

Triethylamine → (1aR,5aR)-2-(4-Cyano-pyridin-2-yl)-1a,2,5,5a-tetrahydro-1H-2,3-diaza-cyclopropa[a]pentalene-4-carboxylic Acid ((S)-3,3,3-Trifluoro-1-hydroxymethyl-propyl)-amide

https://huagongshe.com/reaction/1623993

Reaction equation

Participants

RoleNameHCIDCharge
ReactantTriethylamineHCID 8471—
ReactantMethanaminium, N-((dimethylamino)(3H-1,2,3-triazolo(4,5-b)pyridin-3-yloxy)methylene)-N-methyl-, hexafluorophosphate(1-) (1:1)HCID 9886157—
Reactant(1aR,5aR)-2-(4-cyano-pyridin-2-yl)-1a,2,5,5a-tetrahydro-1H-2,3-diaza-cyclopropa[a]pentalene-4-carboxylic acidHCID 68182356—
Reactant(S)-2-amino-4,4,4-trifluorobutan-1-ol hydrochlorideHCID 86669706—
SolventDimethylformamideHCID 6228—
Product(1aR,5aR)-2-(4-Cyano-pyridin-2-yl)-1a,2,5,5a-tetrahydro-1H-2,3-diaza-cyclopropa[a]pentalene-4-carboxylic Acid ((S)-3,3,3-Trifluoro-1-hydroxymethyl-propyl)-amideHCID 866697058.2%

Reaction Conditions

Temperature23 °C

Reaction Steps

To a solution of (1aR,5aR)-2-(4-cyano-pyridin-2-yl)-1a,2,5,5a-tetrahydro-1H-2,3-diaza-cyclopropa[a]pentalene-4-carboxylic acid (50 mg, 0.188 mmol), (S)-2-amino-4,4,4-trifluorobutan-1-ol hydrochloride (33.7 mg, 0.188 mmol), and triethylamine (0.052 mL, 0.376 mmol) in DMF (2 mL) was added HATU (71.4 mg, 0.188 mmol). The mixture was stirred at 23° C. for 30 min and purified by HPLC followed by preparative TLC to give the title product (6 mg) as a white solid. LCMS m/z=392.4 [M+H]+; 1H NMR (400 MHz, CDCl3) δ 0.45 (td, J=4.7, 3.3 Hz, 1H), 1.24-1.29 (m, 2H), 2.26-2.32 (m, 1H), 2.54-2.69 (m, 2H), 2.77-2.82 (m, 1H), 2.91 (d, J=16.7 Hz, 1H), 3.01 (dd, J=16.7, 6.4 Hz, 1H), 3.87 (d, J=4.0 Hz, 2H), 4.34-4.42 (m, 1H), 7.24 (d, J=8.1 Hz, 1H), 7.41 (dd, J=5.1, 1.1 Hz, 1H), 8.17 (s, 1H), 8.62 (d, J=5.1 Hz, 1H).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08778950B2
Source datasetuspto-grants-2014_07
ORD IDord-1334fab2998d49fdac29d4ab83065e09
Source noteuspto-grants-2014_07