Diisopropylethylamine → HCID 118162227, compound

HRID 1749525Notes

Reaction equation

[NH2:1][CH:2]1[CH2:7][CH2:6][CH2:5][CH:4]([OH:8])[C:3]1([CH3:10])[CH3:9].Cl[C:12]1[C:17]([C:18]#[N:19])=[CH:16][N:15]=[C:14]([S:20][CH3:21])[N:13]=1.CCN(C(C)C)C(C)C>C(O)(C)C>[OH:8][CH:4]1[CH2:5][CH2:6][CH2:7][CH:2]([NH:1][C:12]2[C:17]([C:18]#[N:19])=[CH:16][N:15]=[C:14]([S:20][CH3:21])[N:13]=2)[C:3]1([CH3:10])[CH3:9]

Participants

Conditions

Temperature: 90 °C

Procedure

A mixture of 3-amino-2,2-dimethylcyclohexanol (1.30 g, crude) and 4-chloro-2-(methylthio)pyrimidine-5-carbonitrile (1.35 g, 7.27 mmol), and DIEA (1.93 g, 15.0 mmol) in isopropanol (14 mL) was stirred at 90° C. for 1 h. After removal of the solvent, the residue was purified by silica gel column chromatography (10%-30% ethyl acetate in petroleum ether) to afford the title compound (820 mg, 2.81 mmol, 38% yield), which was separated by chiral column (Superchiral S-AD, 0.46 cm I.D.×25 cm L, 5 μl, CO2/MeOH/DEA=80/20/0.05 (v/v/v); Flow: 2.5 ml/min, 254 nm, T=35° C.), then by chiral column: Chiralpak IC, 0.46 cm I.D.×25 cm L, 5 μl, CO2/MeOH/DEA=70/30/0.05 (v/v/v); Flow: 2.5 ml/min, 254 nm, T=35° C.) to give four isomers (peak 1: 90 mg, d.e.=100%, e.e.=100%, peak 2: 220 mg, d.e.=99.7%, e.e.=100%, peak 3: 210 mg, d.e.=100%, e.e.=97.3%, peak 4:125 mg, d.e.=99.6%, e.e.=100%. Peak 1 and peak 4 were determinated to be cis-isomers and peak 2 and peak 3 were determinated to be trans-isomers by 2D-NMR). MS (ESI) m/z 293.1 [M+H]+

Workup

customAfter removal of the solvent
customthe residue was purified by silica gel column chromatography (10%-30% ethyl acetate in petroleum ether)

Sources & evidence

ORD record: ord-ec97fce05a764aab930daa715c35b205
Source dataset: uspto-grants-2015_10
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US09156798B2

Reaction notes

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