(3,4-Dimethoxyphenyl)acetic acid → N-(6-Chloro-3,4-dihydrospiro[chromene-2,1'-cyclobutan]-4-yl)-2-(3,4-dimethoxyphenyl)acetamide

Participants

Role	Name	HCID	Charge
Reactant	(3,4-Dimethoxyphenyl)acetic acid	HCID 7139	—
Reactant	Triethylamine	HCID 8471	—
Reactant	1-Hydroxybenzotriazole	HCID 75771	—
Reactant	1,3-Propanediamine, N'-(ethylcarbonimidoyl)-N,N-dimethyl-, monohydrochloride	HCID 2723939	—
Reactant	2,2-dimethyl-3,4-dihydro-2H-1-benzopyran-4-amine	HCID 15338705	—
Solvent	Dichloromethane	HCID 6344	—
Product	N-(6-Chloro-3,4-dihydrospiro[chromene-2,1'-cyclobutan]-4-yl)-2-(3,4-dimethoxyphenyl)acetamide	HCID 44132276	—

Reaction Steps

The title compound was prepared from Intermediate 2 (200 mg, 0.763 mmol) and 3,4-dimethoxyphenylacetic acid (224 mg, 1.145 mmol) in presence of EDCI.HCl (219 mg, 1.145 mmol), HOBt (175 mg, 1.145 mmol) and triethylamine (425 μl, 3.053 mmol) in dichloromethane (10 ml) as described in Example 1 to give 217 mg of the product as a white solid; IR (KBr) 3232, 2938, 1634, 1478, 1241, 813 cm−1; 1H NMR (300 MHz, CDCl3) δ 1.62-1.70 (m, 2H), 1.87-1.90 (m, 2H), 1.99-2.15 (m, 2H), 2.18-2.37 (m, 2H), 3.60 (q, J=16.2 Hz, 2H), 3.85 (s, 6H), 5.23 (q, J=9.6 Hz, 1H), 5.48 (d, J=9.0 Hz, 1H), 6.68 (d, J=9.0 Hz, 1H), 6.77-6.84 (m, 3H), 6.96 (s, 1H), 7.04 (d, J=8.4 Hz, 1H); ESI-MS (m/z) 401.27 (100%).

Provenance & Evidence

DOI	10.6084/m9.figshare.5104873.v1
Patent number	US08487121B2
Source dataset	uspto-grants-2013_07
ORD ID	ord-a362e89873744c2ba75f0d3ac6d270da
Source note	uspto-grants-2013_07