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((1R,3R,E)-5-((E)-2-((1R,3aS,7aR)-1-((2R,5R,E)-5,6-diMethylhept-3-en-2-yl)-7a-Methyldihydro-1H-inden-4(2H,5H,6H,7H,7aH)-ylidene)ethylidene)-4-Methylenecyclohexane-1,3-diyl)bis(oxy)bis(tert-butyldiMethylsilane) synthesis
- Product Name:((1R,3R,E)-5-((E)-2-((1R,3aS,7aR)-1-((2R,5R,E)-5,6-diMethylhept-3-en-2-yl)-7a-Methyldihydro-1H-inden-4(2H,5H,6H,7H,7aH)-ylidene)ethylidene)-4-Methylenecyclohexane-1,3-diyl)bis(oxy)bis(tert-butyldiMethylsilane)
- CAS Number:115540-28-8
- Molecular formula:C40H72O2Si2
- Molecular Weight:641.17
![tert-Butyldimethylsilyl chloride](/CAS/GIF/18162-48-6.gif)
18162-48-6
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![((1R,3R,E)-5-((E)-2-((1R,3aS,7aR)-1-((2R,5R,E)-5,6-diMethylhept-3-en-2-yl)-7a-Methyldihydro-1H-inden-4(2H,5H,6H,7H,7aH)-ylidene)ethylidene)-4-Methylenecyclohexane-1,3-diyl)bis(oxy)bis(tert-butyldiMethylsilane)](/CAS/GIF/115540-28-8.gif)
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Yield:-
Steps:
Multi-step reaction with 4 steps
1: 42 percent / imidazole / dimethylformamide / 1.5 h / 20 °C
2: sodium hydrogen carbonate / aq. ethanol / 1.5 h / Heating
3: N-methylmorpholine N-oxide monohydrate, selenium dioxide / CH2Cl2; methanol / 0.83 h / Heating
4: imidazole / dimethylformamide / 1.5 h / 20 °C
References:
Calverley [Tetrahedron,1987,vol. 43,# 20,p. 4609 - 4619,4609-4619]
![Vitamin D2 SO2 Adduct](/CAS/GIF/87680-65-7.gif)
87680-65-7
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$460.00/50mg
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![((1R,3R,E)-5-((E)-2-((1R,3aS,7aR)-1-((2R,5R,E)-5,6-diMethylhept-3-en-2-yl)-7a-Methyldihydro-1H-inden-4(2H,5H,6H,7H,7aH)-ylidene)ethylidene)-4-Methylenecyclohexane-1,3-diyl)bis(oxy)bis(tert-butyldiMethylsilane)](/CAS/GIF/115540-28-8.gif)
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![((1R,3R,E)-5-((E)-2-((1R,3aS,7aR)-1-((2R,5R,E)-5,6-diMethylhept-3-en-2-yl)-7a-Methyldihydro-1H-inden-4(2H,5H,6H,7H,7aH)-ylidene)ethylidene)-4-Methylenecyclohexane-1,3-diyl)bis(oxy)bis(tert-butyldiMethylsilane)](/CAS/GIF/115540-28-8.gif)
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