Technology Process of (3R,4S,5R)-5-benzyloxymethyl-4-hydroxy-3-methyl-5-vinyl-2-pyrrolidinone
There total 12 articles about (3R,4S,5R)-5-benzyloxymethyl-4-hydroxy-3-methyl-5-vinyl-2-pyrrolidinone which
guide to synthetic route it.
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synthetic route:
- Guidance literature:
-
With
sodium tetrahydroborate;
In
methanol;
at 0 ℃;
Yield given;
DOI:10.1039/c39950000793
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26291-75-8,81114-49-0,109200-09-1,128461-80-3
(R)-1-((3aR,5S,6R,6aR)-2,2,6-trimethyl-3a,5,6,6a-tetrahydrofuro[2,3-d][1,3]dioxol-5-yl)ethane-1,2-diol
- Guidance literature:
-
Multi-step reaction with 10 steps
1.1: di-n-butyltin oxide / toluene / 3 h / Heating
1.2: 66 percent / cesium fluoride / dimethylformamide / 18 h / 20 °C
2.1: CrO3; aq. sulfuric acid / acetone / 1 h / 0 °C
3.1: toluene / 16 h / 20 - 60 °C
4.1: 90 percent / diisobutylaluminum hydride / CH2Cl2 / 0.5 h / -15 °C
5.1: NaH / diethyl ether / 0.25 h / -15 - 20 °C
5.2: diethyl ether / 2.3 h / -15 - 20 °C
6.1: 160 mg / toluene / 89 h / 140 °C
7.1: 72 percent / trifluoroacetic acid / H2O / 5 h / 0 °C
8.1: sodium periodate / methanol; H2O / 28 h / 0 - 20 °C
9.1: Jones reagent / acetone / 22 h / 0 - 5 °C
10.1: 1.34 g / NaBH4 / methanol / 3 h / 0 - 20 °C
With
chromium(VI) oxide; sodium tetrahydroborate; sodium periodate; jones reagent; sulfuric acid; sodium hydride; diisobutylaluminium hydride; di(n-butyl)tin oxide; trifluoroacetic acid;
In
methanol; diethyl ether; dichloromethane; water; acetone; toluene;
1.1: stannylation / 1.2: Alkylation / 2.1: Jones oxidation / 3.1: Wittig reaction / 4.1: Reduction / 5.1: Metallation / 5.2: Addition / 6.1: Overman rearrangement / 7.1: Hydrolysis / 8.1: Oxidation / 9.1: Jones oxidation / 10.1: Reduction;
DOI:10.1016/S0040-4020(97)01015-6
- Guidance literature:
-
Multi-step reaction with 9 steps
1.1: CrO3; aq. sulfuric acid / acetone / 1 h / 0 °C
2.1: toluene / 16 h / 20 - 60 °C
3.1: 90 percent / diisobutylaluminum hydride / CH2Cl2 / 0.5 h / -15 °C
4.1: NaH / diethyl ether / 0.25 h / -15 - 20 °C
4.2: diethyl ether / 2.3 h / -15 - 20 °C
5.1: 160 mg / toluene / 89 h / 140 °C
6.1: 72 percent / trifluoroacetic acid / H2O / 5 h / 0 °C
7.1: sodium periodate / methanol; H2O / 28 h / 0 - 20 °C
8.1: Jones reagent / acetone / 22 h / 0 - 5 °C
9.1: 1.34 g / NaBH4 / methanol / 3 h / 0 - 20 °C
With
chromium(VI) oxide; sodium tetrahydroborate; sodium periodate; jones reagent; sulfuric acid; sodium hydride; diisobutylaluminium hydride; trifluoroacetic acid;
In
methanol; diethyl ether; dichloromethane; water; acetone; toluene;
1.1: Jones oxidation / 2.1: Wittig reaction / 3.1: Reduction / 4.1: Metallation / 4.2: Addition / 5.1: Overman rearrangement / 6.1: Hydrolysis / 7.1: Oxidation / 8.1: Jones oxidation / 9.1: Reduction;
DOI:10.1016/S0040-4020(97)01015-6