Diisopropylethylamine → 2-Chloro-N-(1-hydroxy-3,3-dimethyl-1,3-dihydro-benzo[c][1,2]oxaborol-6-yl)-4-vinyl-benzamide

関与物質

役割	名称	HCID	仕込み量
反応物	Diisopropylethylamine	HCID 81531	—
反応物	Methanaminium, N-((dimethylamino)(3H-1,2,3-triazolo(4,5-b)pyridin-3-yloxy)methylene)-N-methyl-, hexafluorophosphate(1-) (1:1)	HCID 9886157	—
反応物	HCID 58373146	HCID 58373146	—
反応物	6-amino-3,3-dimethylbenzo[c][1,2]oxaborol-1(3H)-ol hydrochloride	HCID 66927703	—
溶媒	Dimethylformamide	HCID 6228	—
生成物	2-Chloro-N-(1-hydroxy-3,3-dimethyl-1,3-dihydro-benzo[c][1,2]oxaborol-6-yl)-4-vinyl-benzamide	HCID 66927435	—

反応手順

To a solution of 2-chloro-4-vinyl benzoic acid (44 mg, 0.24 mmol) in DMF (2 mL) was added HATU (55 mg, 0.15 mmol) and DIEA (25 mg, 0.21 mmol). After 1 hour 6-amino-3,3-dimethyl-3H-benzo[c][1,2]oxaborol-1-ol hydrochloride salt (30 mg, 0.14 mmol) was added. After 12 hours the reaction was concentrated down under reduced pressure onto celite. The crude material was subjected to flash chromatography (Isco Companion, 4 g SiO2 cartridge, SiO2 solid load, neat DCM to 10% MeOH gradient) to give 2-Chloro-N-(1-hydroxy-3,3-dimethyl-1,3-dihydro-benzo[c][1,2]oxaborol-6-yl)-4-vinyl-benzamide as a white powder. Amount obtained: 20.8 mg (48%). Data: LCMS (M/Z): 342 (M+H); 1H NMR (DMSO-d6) δ: 1.36-1.59 (m, 6 H) 5.42 (d, J=11.1 Hz, 1 H) 6.02 (d, J=17.8 Hz, 1 H) 6.79 (dd, J=17.7, 11.0 Hz, 1 H) 7.33-7.46 (m, 1 H) 7.56 (s, 2 H) 7.69 (d, J=1.6 Hz, 2 H) 8.05 (dd, J=1.7, 0.5 Hz, 1 H) 9.00 (br. s, 1 H) 10.35-10.62 (m, 1 H).

情報源と証拠

DOI	10.6084/m9.figshare.5104873.v1
特許番号	US09440994B2
出典データセット	uspto-grants-2016_09
ORD ID	ord-bdc28bb7c78b43e68c7b40bf777bbe32
出典メモ	uspto-grants-2016_09