Diisopropylethylamine → Tert-butyl 4-(1-(7-(3,4-dimethoxyphenylamino)thiazolo[5,4-d]pyrimidin-5-yl)pyrrolidine-3-carboxamido)benzoate

Participants

Role	Name	HCID	Charge
Reactant	Diisopropylethylamine	HCID 81531	—
Reactant	Benzoic acid, 4-amino-, 1,1-dimethylethyl ester	HCID 233272	—
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	1-(7-(3,4-Dimethoxyphenylamino)thiazolo[5,4-d]pyrimidin-5-yl)pyrrolidine-3-carboxylic acid	HCID 68379444	—
Solvent	Dimethylformamide	HCID 6228	—
Product	Tert-butyl 4-(1-(7-(3,4-dimethoxyphenylamino)thiazolo[5,4-d]pyrimidin-5-yl)pyrrolidine-3-carboxamido)benzoate	HCID 68379487	77.2%

Reaction Steps

A mixture of 1-(7-(3,4-dimethoxyphenylamino)thiazolo[5,4-d]pyrimidin-5-yl)pyrrolidine-3-carboxylic acid (95 mg, 0.236 mmol), tert-butyl 4-aminobenzoate (59 mg, 0.306 mmol), HATU (116 mg, 0.306 mmol) and DIEA (91 mg, 0.708 mmol) in 10 mL of DMF was stirred at room temperature for 72 hours. The solvent was evaporated at 80° C. at reduced pressure and the residue was purified by silica gel chromatography (silica gel 200-300 mesh, eluting with a mixture of ethyl acetate and petroleum ether (1:1)) to give tert-butyl 4-(1-(7-(3,4-dimethoxyphenylamino)thiazolo[5,4-d]pyrimidin-5-yl)pyrrolidine-3-carboxamido)benzoate (105 mg, 77%) as a solid. LC-MS: 577.2 [M+H]+, tR=1.69 min

Provenance & Evidence

DOI	10.6084/m9.figshare.5104873.v1
Patent number	US08921383B2
Source dataset	uspto-grants-2014_12
ORD ID	ord-56dabab4418f4098a717a2e9aed34c57
Source note	uspto-grants-2014_12