5-((8S,9R)-9-Benzyloxy-8-methyl-1,4,7-trioxa-spiro[4.6]undec-8-yl)-2-methyl-pentan-1-ol

Base Information

• Chemical Name: 5-((8S,9R)-9-Benzyloxy-8-methyl-1,4,7-trioxa-spiro[4.6]undec-8-yl)-2-methyl-pentan-1-ol
• CAS No.: 73617-66-0
• Molecular Formula: C₂₂H₃₄O₅
• Molecular Weight: 378.509
• Mol file: 73617-66-0.mol

Synonyms:5-((8S,9R)-9-Benzyloxy-8-methyl-1,4,7-trioxa-spiro[4.6]undec-8-yl)-2-methyl-pentan-1-ol

Chemical Property of 5-((8S,9R)-9-Benzyloxy-8-methyl-1,4,7-trioxa-spiro[4.6]undec-8-yl)-2-methyl-pentan-1-ol

Chemical Property:

Purity/Quality:

Safty Information:

• Pictogram(s):  
• Hazard Codes: 

MSDS Files:

Useful:

Technology Process of 5-((8S,9R)-9-Benzyloxy-8-methyl-1,4,7-trioxa-spiro[4.6]undec-8-yl)-2-methyl-pentan-1-ol

There total 1 articles about 5-((8S,9R)-9-Benzyloxy-8-methyl-1,4,7-trioxa-spiro[4.6]undec-8-yl)-2-methyl-pentan-1-ol 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: 87.0%

(6R,7S)-6-Benzyloxy-7-methyl-7-[4-methyl-5-(tetrahydro-pyran-2-yloxy)-pentyl]-oxepan-3-one (77513-81-6) + ethylene glycol (107-21-1) → 5-((8S,9R)-9-Benzyloxy-8-methyl-1,4,7-trioxa-spiro[4.6]undec-8-yl)-2-methyl-pentan-1-ol (73617-66-0)

Guidance literature:

With toluene-4-sulfonic acid; In benzene;

DOI:10.1016/S0040-4039(01)81819-0

Reference yield: 83.0%

5-((8S,9R)-9-Benzyloxy-8-methyl-1,4,7-trioxa-spiro[4.6]undec-8-yl)-2-methyl-pentan-1-ol (73617-66-0) → 5-((8S,9R)-9-Benzyloxy-8-methyl-1,4,7-trioxa-spiro[4.6]undec-8-yl)-2-methyl-pentanal (73617-69-3,78039-30-2)

Guidance literature:

With pyridine; chromium(VI) oxide; In dichloromethane;

DOI:10.1016/S0040-4039(01)81819-0

Reference yield:

5-((8S,9R)-9-Benzyloxy-8-methyl-1,4,7-trioxa-spiro[4.6]undec-8-yl)-2-methyl-pentan-1-ol (73617-66-0) → (8S,9R)-9-Benzyloxy-8-[4,8-dimethyl-5-(tetrahydro-pyran-2-yloxy)-non-7-enyl]-8-methyl-1,4,7-trioxa-spiro[4.6]undecane (73617-74-0)

Guidance literature:

Multi-step reaction with 6 steps

1: 83 percent / CrO₃, pyridine / CH₂Cl₂

2: 1.) Mg / THF

3: 97 percent / pyridine

4: 95 percent / TsOH / benzene / 24 h / Heating

5: 94 percent / K₂CO₃ / methanol; H₂O

6: 86 percent / TsOH / diethyl ether

With pyridine; chromium(VI) oxide; potassium carbonate; toluene-4-sulfonic acid; magnesium; In pyridine; methanol; diethyl ether; dichloromethane; water; benzene;

DOI:10.1016/S0040-4039(01)81819-0

upstream raw materials:

(6R,7S)-6-Benzyloxy-7-methyl-7-[4-methyl-5-(tetrahydro-pyran-2-yloxy)-pentyl]-oxepan-3-one

ethylene glycol

Downstream raw materials:

5-((8S,9R)-9-Benzyloxy-8-methyl-1,4,7-trioxa-spiro[4.6]undec-8-yl)-2-methyl-pentanal

9-((8S,9R)-9-Benzyloxy-8-methyl-1,4,7-trioxa-spiro[4.6]undec-8-yl)-2,6-dimethyl-non-2-en-5-ol

9-((8S,9R)-9-Benzyloxy-8-methyl-1,4,7-trioxa-spiro[4.6]undec-8-yl)-2,6-dimethyl-non-1-en-5-ol

Acetic acid 1-[4-((8S,9R)-9-benzyloxy-8-methyl-1,4,7-trioxa-spiro[4.6]undec-8-yl)-1-methyl-butyl]-4-methyl-pent-3-enyl ester