(1'E,2S,5R,7S,1''S)-(+)-7-{2''-(tert-butyldiphenylsilyloxy)-1''-methylethyl}-2-(2'-ethoxycarbonyl-2'-methyl-1'-propenyl)-1,6-dioxaspiro[4.5]decane

Base Information

Chemical Name:(1'E,2S,5R,7S,1''S)-(+)-7-{2''-(tert-butyldiphenylsilyloxy)-1''-methylethyl}-2-(2'-ethoxycarbonyl-2'-methyl-1'-propenyl)-1,6-dioxaspiro[4.5]decane
CAS No.:858666-91-8
Molecular Formula:C₃₃H₄₆O₅Si
Molecular Weight:550.811
Hs Code.:

Synonyms:(1'E,2S,5R,7S,1''S)-(+)-7-{2''-(tert-butyldiphenylsilyloxy)-1''-methylethyl}-2-(2'-ethoxycarbonyl-2'-methyl-1'-propenyl)-1,6-dioxaspiro[4.5]decane

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Chemical Property of (1'E,2S,5R,7S,1''S)-(+)-7-{2''-(tert-butyldiphenylsilyloxy)-1''-methylethyl}-2-(2'-ethoxycarbonyl-2'-methyl-1'-propenyl)-1,6-dioxaspiro[4.5]decane

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Technology Process of (1'E,2S,5R,7S,1''S)-(+)-7-{2''-(tert-butyldiphenylsilyloxy)-1''-methylethyl}-2-(2'-ethoxycarbonyl-2'-methyl-1'-propenyl)-1,6-dioxaspiro[4.5]decane

There total 26 articles about (1'E,2S,5R,7S,1''S)-(+)-7-{2''-(tert-butyldiphenylsilyloxy)-1''-methylethyl}-2-(2'-ethoxycarbonyl-2'-methyl-1'-propenyl)-1,6-dioxaspiro[4.5]decane which guide to synthetic route it. The literature collected by LookChem mainly comes from the sharing of users and the free literature resources found by Internet computing technology. We keep the original model of the professional version of literature to make it easier and faster for users to retrieve and use. At the same time, we analyze and calculate the most feasible synthesis route with the highest yield for your reference as below:

synthetic route:

Reference yield: 99.0%

: 858666-65-6
(2S,5S,7S,1''S)-(+)-7-{2''-(tert-butyldiphenylsilyloxy)-1''-methylethyl}-2-formyl-1,6-dioxaspiro[4.5]decane

: 21382-82-1
(carbethoxyethylidene)triphenylphosphorane

: 858666-91-8
(1'E,2S,5R,7S,1''S)-(+)-7-{2''-(tert-butyldiphenylsilyloxy)-1''-methylethyl}-2-(2'-ethoxycarbonyl-2'-methyl-1'-propenyl)-1,6-dioxaspiro[4.5]decane

Guidance literature:: In dichloromethane;
DOI:10.1021/ol0507975

Reference yield:

: 32780-06-6
(5S)-5-(hydroxymethyl)-2-oxo-tetrahydrofuran

: 858666-91-8
(1'E,2S,5R,7S,1''S)-(+)-7-{2''-(tert-butyldiphenylsilyloxy)-1''-methylethyl}-2-(2'-ethoxycarbonyl-2'-methyl-1'-propenyl)-1,6-dioxaspiro[4.5]decane

Guidance literature:: Multi-step reaction with 8 steps

1.1: 70 percent / Ag₂O

2.1: AlMe₃ / CH₂Cl₂; hexane / 0.33 h / 0 °C

3.1: 1.14 g / camphorsulfonic acid / CH₂Cl₂ / 20 °C

4.1: tert-butyllithium / pentane; diethyl ether / 1.17 h / -78 - 0 °C

4.2: 72 percent / pentane; diethyl ether / 3 h / 0 °C

5.1: 92 percent / DDQ / CH₂Cl₂; H₂O / 1.5 h / 20 °C / pH 7

6.1: 95 percent / liithium p,p'-di-tert-butylbiphenyl / tetrahydrofuran / -78 °C

7.1: 92 percent / Dess-Martin periodinane; pyridine / CH₂Cl₂ / 3 h

8.1: 86 percent / CH₂Cl₂ / 2 h / 20 °C

With pyridine; lithium 4,4′-di(tert-butyl)biphenyl; camphor-10-sulfonic acid; trimethylaluminum; tert.-butyl lithium; Dess-Martin periodane; 2,3-dicyano-5,6-dichloro-p-benzoquinone; silver(l) oxide; In tetrahydrofuran; diethyl ether; hexane; dichloromethane; water; pentane; 8.1: Wittig reaction;
DOI:10.1021/ol0504291

Reference yield:

: 858666-87-2
(2S,5S,7S,1''S)-(+)-2-(1'-benzyloxymethyl)-7-{2''-(tert-butyldiphenylsilyloxy)-1''-methylethyl}-1,6-dioxaspiro[4.5]decane

: 858666-91-8
(1'E,2S,5R,7S,1''S)-(+)-7-{2''-(tert-butyldiphenylsilyloxy)-1''-methylethyl}-2-(2'-ethoxycarbonyl-2'-methyl-1'-propenyl)-1,6-dioxaspiro[4.5]decane

Guidance literature:: Multi-step reaction with 3 steps

1: 75 percent / H₂ / Pd/C / ethyl acetate / 4.5 h

2: 95 percent / pyridine; Dess-Martin periodinane / CH₂Cl₂ / 3 h / 20 °C

3: 99 percent / CH₂Cl₂ / 20 h / 20 °C

With pyridine; hydrogen; Dess-Martin periodane; palladium on activated charcoal; In dichloromethane; ethyl acetate; 3: Wittig olefination;
DOI:10.1039/b600951d