Diisopropylethylamine → 5,6-Dimethyl-2-[(5,6,7,8-tetrahydro-naphthalene-1-carbonyl)-amino]-indan-2-carboxylic acid ethyl ester

To a solution of 5,6,7,8-tetrahydro-naphthalene-1-carboxylic acid (400 mg, 2.27 mmol), 2-amino-5,6-dimethyl-indan-2-carboxylic acid ethyl ester (636 mg, 2.72 mmol), HATU (1.30 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 (100 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: 5-50% EtOAc in heptane) to give a pure product (78) as white solid (817 mg, 92%).

1. customAfter the removal of DMF in vacuo
2. dissolutionthe residue is dissolved in EtOAc (100 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: 5-50% EtOAc in heptane)

ORDレコード

ord-ef57f9b373ef46378e9fe94c2a5040de

出典データセット

uspto-grants-2013_10

DOI

10.6084/m9.figshare.5104873.v1

特許番号

US08569535B2