2-tert-Butyl 7-methyl 3,4-dihydroisoquinoline-2,7(1H)-dicarboxylate synthesis
- Product Name:2-tert-Butyl 7-methyl 3,4-dihydroisoquinoline-2,7(1H)-dicarboxylate
- CAS Number:960305-54-8
- Molecular formula:C16H21NO4
- Molecular Weight:291.34
149353-95-7
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$37.00/100mg
74-88-4
357 suppliers
$15.00/10g
960305-54-8
28 suppliers
$428.00/1g
Yield:960305-54-8 95.5 %
Reaction Conditions:
with potassium carbonate at 20;
Steps:
62.A Step A: Synthesis of methyl 2-(tert-Butoxycarbonyl)-1,2,3,4-tetrahydroisoquinoline-7-carboxylate
At room temperature, 2-(tert-Butoxycarbonyl)-1,2,3,4-tetrahydroisoquinoline-7-carboxylic acid (300.0 mg, 1.1 mmol) is dissolved in N,N-dimethylformamide (5 ml) solution, anhydrous potassium carbonate (300.0 mg, 2.2 mmol) and methyl iodide (307.2 mg, 2.2 mmol) are added for 2 h at room temperature. At the end of the reaction, saturated ammonium chloride aqueous solution (10 ml) was added to quench, ethyl acetate (100 ml) diluted, washed with 1 mole of hydrochloric acid per liter (20 ml× 3 times), saturated saline (20 ml × 1 time), dried anhydrous sodium sulfate, concentrated. The resulting residue was purified by silica gel column chromatography (eluent: petroleum ether/ethyl acetate = 6/1) to obtain 300.0 mg of methyl 2-(tert-butoxycarbonyl)-1,2,3,4-tetrahydroisoquinoline-7-carboxylate (yield 95.5%).
References:
CN115594669,2023,A Location in patent:Paragraph 1247-1253
67-56-1
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258515-65-0
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201230-82-2
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960305-54-8
28 suppliers
$428.00/1g
149353-95-7
111 suppliers
$37.00/100mg
75-52-5
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24424-99-5
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$13.50/25G
960305-54-8
28 suppliers
$428.00/1g