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ChemicalBook CAS DataBase List Ethyl (2Z,5S,6E)-5-{[tert-Butyl(dimethyl)silyl]oxy}-2,6-dimethyl-7-(2-methyl-1,3-thiazol-4-yl)hepta-2,6-dienoate
218614-04-1

Ethyl (2Z,5S,6E)-5-{[tert-Butyl(dimethyl)silyl]oxy}-2,6-dimethyl-7-(2-methyl-1,3-thiazol-4-yl)hepta-2,6-dienoate synthesis

7synthesis methods
107905-52-2 Synthesis
ETHYL 2-[BIS(2,2,2-TRIFLUOROETHYL)PHOSPHONO] PROPIONATE

107905-52-2
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188730-08-7

188730-08-7
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Yield:218614-04-1 5.45 g

Reaction Conditions:

Stage #1: ethyl 2-[bis(2,2,2-trifluoroethyl)phosphono]propionatewith 18-crown-6 ether;potassium hexamethylsilazane in tetrahydrofuran; for 0.25 h;
Stage #2: (3S,4E)-3-{[tert-butyl(dimethyl)silyl]oxy}-4-methyl-5-(2-methyl-1,3-thiazol-4-yl)pent-4-en-1-al in tetrahydrofuran at -78; for 0.5 h;Further stages.;Wittig olefination;

References:

Mulzer, Johann;Mantoulidis, Andreas;Oehler, Elisabeth [Journal of Organic Chemistry,2000,vol. 65,# 22,p. 7456 - 7467]