Triethylamine → (S)-2-hydroxy-1-(4-(2-(2-hydroxyphenyl)-7-methylquinazolin-4-yl)piperazin-1-yl)butan-1-one

https://huagongshe.com/reaction/2079273

Participants

Role	Name	HCID	Charge
Reactant	Triethylamine	HCID 8471	—
Reactant	(S)-2-Hydroxybutyric acid	HCID 440864	—
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	6-[7-methyl-4-(1-piperazinyl)-1H-quinazolin-2-ylidene]-1-cyclohexa-2,4-dienone	HCID 136134616	—
Solvent	Dichloromethane	HCID 6344	—
Product	(S)-2-hydroxy-1-(4-(2-(2-hydroxyphenyl)-7-methylquinazolin-4-yl)piperazin-1-yl)butan-1-one	HCID 136121510	95%

Reaction Steps

To a solution of 2-(7-methyl-4-(piperazin-1-yl)quinazolin-2-yl)phenol (250 mg, 0.78 mmol) in CH2Cl2 (6 mL) was added triethylamine (217 μL, 1.56 mmol) followed by the addition of (S)-2-hydroxybutanoic acid (105 mg, 1.0 mmol) and HATU (380 mg, 1.00 mmol). The reaction mixture was stirred at room temperature for 3 h and then quenched with H2O. The aqueous layer was extracted twice with CH2Cl2, dried over MgSO4, filtered, and concentrated. Purification via silica gel chromatography using 0-10% EtOAc in 50:50 CH2Cl2:hexanes gave (S)-2-hydroxy-1-(4-(2-(2-hydroxyphenyl)-7-methylquinazolin-4-yl)piperazin-1-yl)butan-1-one (300 mg, 95%). LC/MS: m/z 407.5 (M+H)+ at 2.31 min (10%-99% CH3CN (0.035% TFA)/H2O (0.05% TFA)). 1H NMR (400 MHz, DMSO-d6) d 8.45 (m, 1H), 8.01 (d, J=8.5 Hz, 1H), 7.70 (s, 1H), 7.39 (m, 2H), 6.95 (m, 2H), 4.92 (d, J=7.0 Hz, 1H), 4.28 (q, J=6.5 Hz, 1H), 3.89 (m, 8H), 2.52 (s, 3H), 1.67 (m, 1H), 1.51 (m, 1H), 0.91 (t, J=7.4 Hz, 3H) ppm.

Provenance & Evidence

DOI	10.6084/m9.figshare.5104873.v1
Patent number	US07928107B2
Source dataset	uspto-grants-2011_04
ORD ID	ord-3f71aed3bcfe4436833ce201a156d4d2
Source note	uspto-grants-2011_04