R-(+)-6,6'-BIS(DIPHENYLPHOSPHINO)-2,2',3,3'-TETRAHYDRO-5,5'-BI-1,4-BENZODIOXIN synthesis
- Product Name:R-(+)-6,6'-BIS(DIPHENYLPHOSPHINO)-2,2',3,3'-TETRAHYDRO-5,5'-BI-1,4-BENZODIOXIN
- CAS Number:503538-68-9
- Molecular formula:C40H32O4P2
- Molecular Weight:638.63
493-09-4
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503538-68-9
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Yield:-
Steps:
Multi-step reaction with 7 steps
1.1: 100 percent / NBS / dimethylformamide / 24 h / 20 °C
2.1: n-BuLi / tetrahydrofuran; hexane / 1.17 h / -78 °C
2.2: tetrahydrofuran; hexane / -70 - 0 °C
3.1: aq. H2O2 / methanol / 1 h / 20 °C
4.1: t-BuLi / pentane; tetrahydrofuran / 3.5 h / -100 - -70 °C
4.2: I2 / pentane; tetrahydrofuran / 2 h / -70 - 0 °C
5.1: Cu / dimethylformamide / 4 h / 140 °C
6.1: (+)-O,O-dibenzoyltartaric acid / CH2Cl2
6.2: aq. CH2Cl2 / CH2Cl2 / 0.5 h
7.1: 91 percent / NBu3; HSiCl3 / xylene / 140 °C
References:
Paule, Sebastien Duprat de;Jeulin, Severine;Ratovelomanana-Vidal, Virginie;Genet, Jean-Pierre;Champion, Nicolas;Dellis, Philippe [European Journal of Organic Chemistry,2003,# 10,p. 1931 - 1941]
52287-51-1
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503538-68-9
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445380-60-9
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![Ethanamine, N-[(3,5-dichlorophenyl)methylene]-2,2-diethoxy-](/CAS/20210305/GIF/1000210-73-0.gif)
1000210-73-0
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503538-68-9
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445380-61-0
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503538-68-9
35 suppliers
$46.00/50mg