1',1'-bis<5-acetoxy-3-methyl-5-oxo-1-phenyl-Δ²-4-pyrazyl>-1'-deoxy-4',5'-di-O-acetyl-2',3'-O-isopropylidene-D-ribitol

Base Information

• Chemical Name: 1',1'-bis<5-acetoxy-3-methyl-5-oxo-1-phenyl-Δ²-4-pyrazyl>-1'-deoxy-4',5'-di-O-acetyl-2',3'-O-isopropylidene-D-ribitol
• CAS No.: 89243-23-2
• Molecular Formula: C₃₆H₄₀N₄O₁₀
• Molecular Weight: 688.734

Synonyms:1',1'-bis<5-acetoxy-3-methyl-5-oxo-1-phenyl-Δ²-4-pyrazyl>-1'-deoxy-4',5'-di-O-acetyl-2',3'-O-isopropylidene-D-ribitol

Chemical Property of 1',1'-bis<5-acetoxy-3-methyl-5-oxo-1-phenyl-Δ²-4-pyrazyl>-1'-deoxy-4',5'-di-O-acetyl-2',3'-O-isopropylidene-D-ribitol

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Technology Process of 1',1'-bis<5-acetoxy-3-methyl-5-oxo-1-phenyl-Δ²-4-pyrazyl>-1'-deoxy-4',5'-di-O-acetyl-2',3'-O-isopropylidene-D-ribitol

There total 3 articles about 1',1'-bis<5-acetoxy-3-methyl-5-oxo-1-phenyl-Δ²-4-pyrazyl>-1'-deoxy-4',5'-di-O-acetyl-2',3'-O-isopropylidene-D-ribitol 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: 85.0%

acetic anhydride (108-24-7) + 1',1'-bis<3-methyl-5-oxo-1-phenyl-Δ2-4-pyrazyl>-1'-deoxy-2':3'-O-isopropylidene-D-ribitol (89243-17-4) → 1',1'-bis<5-acetoxy-3-methyl-5-oxo-1-phenyl-Δ2-4-pyrazyl>-1'-deoxy-4',5'-di-O-acetyl-2',3'-O-isopropylidene-D-ribitol (89243-23-2)

Guidance literature:

With pyridine; at 0 ℃; for 24h;

Reference yield:

2,3-O-isopropylidene-D-ribose (13199-25-2,63097-05-2,90191-71-2,125165-31-3,131846-11-2) → 1',1'-bis<5-acetoxy-3-methyl-5-oxo-1-phenyl-Δ2-4-pyrazyl>-1'-deoxy-4',5'-di-O-acetyl-2',3'-O-isopropylidene-D-ribitol (89243-23-2)

Guidance literature:

Multi-step reaction with 2 steps

1: 20 percent / ammonium acetate / methanol / 48 h / Ambient temperature

2: 85 percent / pyridine / 24 h / 0 °C

With pyridine; ammonium acetate; In methanol;

Reference yield:

edaravone (89-25-8) → 1',1'-bis<5-acetoxy-3-methyl-5-oxo-1-phenyl-Δ2-4-pyrazyl>-1'-deoxy-4',5'-di-O-acetyl-2',3'-O-isopropylidene-D-ribitol (89243-23-2)

Guidance literature:

Multi-step reaction with 2 steps

1: 20 percent / ammonium acetate / methanol / 48 h / Ambient temperature

2: 85 percent / pyridine / 24 h / 0 °C

With pyridine; ammonium acetate; In methanol;

upstream raw materials:

acetic anhydride

1',1'-bis<3-methyl-5-oxo-1-phenyl-Δ²-4-pyrazyl>-1'-deoxy-2':3'-O-isopropylidene-D-ribitol

2,3-O-isopropylidene-D-ribose

edaravone

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