(3aS,5S,5aR,8aR,8bS)-5-(benzyloxymethyl)-2,2,7,7-tetramethyltetrahydro-3aH-bis-[1,3]-dioxolo-[4,5-b:4',5'-d]-pyran

Base Information

• Chemical Name: (3aS,5S,5aR,8aR,8bS)-5-(benzyloxymethyl)-2,2,7,7-tetramethyltetrahydro-3aH-bis-[1,3]-dioxolo-[4,5-b:4',5'-d]-pyran
• CAS No.: 70932-43-3
• Molecular Formula: C₁₉H₂₆O₆
• Molecular Weight: 350.412
• Mol file: 70932-43-3.mol

Synonyms:(3aS,5S,5aR,8aR,8bS)-5-(benzyloxymethyl)-2,2,7,7-tetramethyltetrahydro-3aH-bis-[1,3]-dioxolo-[4,5-b:4',5'-d]-pyran

Chemical Property of (3aS,5S,5aR,8aR,8bS)-5-(benzyloxymethyl)-2,2,7,7-tetramethyltetrahydro-3aH-bis-[1,3]-dioxolo-[4,5-b:4',5'-d]-pyran

Chemical Property:

Purity/Quality:

Safty Information:

• Pictogram(s):  
• Hazard Codes: 

MSDS Files:

Useful:

Technology Process of (3aS,5S,5aR,8aR,8bS)-5-(benzyloxymethyl)-2,2,7,7-tetramethyltetrahydro-3aH-bis-[1,3]-dioxolo-[4,5-b:4',5'-d]-pyran

There total 4 articles about (3aS,5S,5aR,8aR,8bS)-5-(benzyloxymethyl)-2,2,7,7-tetramethyltetrahydro-3aH-bis-[1,3]-dioxolo-[4,5-b:4',5'-d]-pyran 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: 84.0%

1,2:3,4-di-O-isopropylidene-β-D-galactopyranose (110319-61-4) + benzyl bromide (100-39-0) → 6-O-benzyl-1,2-3,4-di-O-isopropylidene-D-galactopyranoside (35526-05-7,70932-43-3)

Guidance literature:

With tetra-(n-butyl)ammonium iodide; sodium hydride; In tetrahydrofuran; Ambient temperature;

DOI:10.1016/S0040-4020(01)89687-3

Reference yield: 47.0%

1,2:3,4-di-O-isopropylidene-α-L-galactopyranose (4064-06-6,27108-09-4,72361-04-7,99166-41-3,110319-61-4,148623-63-6,150199-47-6,70932-37-5) + benzyl bromide (100-39-0) → (3aS,5S,5aR,8aR,8bS)-5-(benzyloxymethyl)-2,2,7,7-tetramethyltetrahydro-3aH-bis-[1,3]-dioxolo-[4,5-b:4',5'-d]-pyran (70932-43-3)

Guidance literature:

With sodium hydride; In tetrahydrofuran; mineral oil; at 20 ℃;

Reference yield:

D-Galactose (10257-28-0) → 6-O-benzyl-1,2-3,4-di-O-isopropylidene-D-galactopyranoside (35526-05-7,70932-43-3)

Guidance literature:

Multi-step reaction with 2 steps

1: sulfuric acid; copper(II) sulfate / 20 °C

2: potassium hydroxide / toluene / 5 h / 100 °C

With sulfuric acid; copper(II) sulfate; potassium hydroxide; In toluene;

DOI:10.1002/chem.201300150

upstream raw materials:

1,2:3,4-di-O-isopropylidene-α-L-galactopyranose

benzyl bromide

1,2:3,4-di-O-isopropylidene-β-D-galactopyranose

D-Galactose

Downstream raw materials:

2,3,4-tri-O-benzoyl-6-O-benzyl-β-D-galactopyranosyl trichloroacetimidate

6-O-benzyl-D-galactose

allyl 6-O-benzyl-α-D-galactopyranoside

2,3,4-tri-O-acetyl-6-O-benzyl-α-D-galactopyranosyl bromide