Diisopropylethylamine → 2-[(Isoquinoline-4-carbonyl)-amino]-indan-2-carboxylic acid

To a solution of 5,6,7,8-tetrahydro-naphthalene-1-carboxylic acid (400 mg, 2.27 mmol), 2-amino-5-methoxy-indan-2-carboxylic acid ethyl ester (639 mg, 2.72 mmol), HATU (1.3 g, 3.41 mmol) in anhydrous DMF (15 mL) is added DIPEA (563 μL, 3.41 mmol). The resulting solution is stirred at RT overnight. After the removal of DMF in vacuo, the residue is dissolved in EtOAc (50 mL) and washed with water (1×10 mL) and brine (2×10 mL). The organic layer is dried over anhydrous Na2SO4 and concentrated in vacuo. The residue is purified by flash column chromatography (115 g silica gel, gradient elution: 5%-40% EtOAc in heptane) to give a pure product (52) as white solid (622 mg, 70%).

1. customAfter the removal of DMF in vacuo
2. dissolutionthe residue is dissolved in EtOAc (50 mL)
3. washwashed with water (1×10 mL) and brine (2×10 mL)
4. dry with materialThe organic layer is dried over anhydrous Na2SO4
5. concentrationconcentrated in vacuo
6. customThe residue is purified by flash column chromatography (115 g silica gel, gradient elution: 5%-40% EtOAc in heptane)

ORD record

ord-9b8a1f4e2e014ef58f14d2427f24b174

Source dataset

uspto-grants-2013_10

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US08569535B2