Diisopropylethylamine → 5-(4-tert-butylbenzyl)-N-(2-(5-chloro-1H-indol-3-yl)ethyl)-1,2,4-oxadiazole-3-carboxamide

Participants

Role	Name	HCID	Charge
Reactant	Diisopropylethylamine	HCID 81531	—
Reactant	5-Chloro-1H-indole-3-ethylamine monohydrochloride	HCID 2827494	—
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	Ethyl 5-(4-tert-butylbenzyl)-1,2,4-oxadiazole-3-carboxylate	HCID 66831957	—
Solvent	Methanol	HCID 887	—
Solvent	Dimethylformamide	HCID 6228	—
Product	5-(4-tert-butylbenzyl)-N-(2-(5-chloro-1H-indol-3-yl)ethyl)-1,2,4-oxadiazole-3-carboxamide	HCID 66831690	22.2%

Reaction Steps

This compound was prepared according to method F with ethyl 5-(4-tert-butylbenzyl)-1,2,4-oxadiazole-3-carboxylate (0.125 g; 0.433 mmol) in methanol (2 mL); and 2-(5-chloro-1H-indol-3-yl)ethanamine hydrochloride (0.100 g; 0.433 mmol), HATU (0.164 g; 0.432 mmol), N,N diisopropylethylamine (0.075 mL; 0.432 mmol) in DMF (4 mL). The crude mixture was purified by flash chromatography on silica (eluent 20 to 100% ethyl acetate in heptane) to yield 0.042 g (22%) of 5-(4-tert-butylbenzyl)-N-(2-(5-chloro-1H-indol-3-yl)ethyl)-1,2,4-oxadiazole-3-carboxamide as a white solid.

Provenance & Evidence

DOI	10.6084/m9.figshare.5104873.v1
Patent number	US09434722B2
Source dataset	uspto-grants-2016_09
ORD ID	ord-d38eb36d51444a09bf7f0e8128fa93a1
Source note	uspto-grants-2016_09