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18162-48-6872-50-4Methylene ChloridenaphthaleneTHFTitanium Dioxide
1421065-63-5

TERT-BUTYL 6-OXO-3,4-DIHYDRO-1H-PYRIDO[1,2-A]PYRAZINE-2(6H)-CARBOXYLATE synthesis

5synthesis methods
24424-99-5 Synthesis
Di-tert-butyl dicarbonate

24424-99-5
863 suppliers
$13.50/25G

1,2,3,4-Tetrahydro-2-[(2-nitrophenyl)sulfonyl]-6H-pyrido[1,2-a]pyrazin-6-one

1421065-62-4
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Thiophenol

108-98-5
0 suppliers
$21.10/10g

TERT-BUTYL 6-OXO-3,4-DIHYDRO-1H-PYRIDO[1,2-A]PYRAZINE-2(6H)-CARBOXYLATE

1421065-63-5
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Yield:1421065-63-5 80%

Reaction Conditions:

Stage #1: 2-(2-nitrophenylsulfonyl)-3,4-dihydro-1H-pyrido[1,2-a]pyrazin-6(2H)-one;thiophenolwith potassium carbonate in N,N-dimethyl-formamide at 20; for 1 h;
Stage #2: di-tert-butyl dicarbonate at 20; for 3 h;

References:

WO2013/10453,2013,A1 Location in patent:Page/Page column 146

2-TERT-BUTOXY-6-CHLOROPYRIDINE

547740-43-2
24 suppliers
$14.90/1g

TERT-BUTYL 6-OXO-3,4-DIHYDRO-1H-PYRIDO[1,2-A]PYRAZINE-2(6H)-CARBOXYLATE

1421065-63-5
7 suppliers
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References
6-tert-butoxypyridine-2-carbonitrile

1211584-93-8
5 suppliers
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TERT-BUTYL 6-OXO-3,4-DIHYDRO-1H-PYRIDO[1,2-A]PYRAZINE-2(6H)-CARBOXYLATE

1421065-63-5
7 suppliers
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References
(6-tert-butoxypyridin-2-yl)methanamine

1247441-30-0
11 suppliers
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TERT-BUTYL 6-OXO-3,4-DIHYDRO-1H-PYRIDO[1,2-A]PYRAZINE-2(6H)-CARBOXYLATE

1421065-63-5
7 suppliers
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References
2402-78-0 Synthesis
2,6-Dichloropyridine

2402-78-0
521 suppliers
$6.00/25g

TERT-BUTYL 6-OXO-3,4-DIHYDRO-1H-PYRIDO[1,2-A]PYRAZINE-2(6H)-CARBOXYLATE

1421065-63-5
7 suppliers
inquiry

References