(3S,3aR,7aS)-3,6-dimethyl-3a,4,5,7a-tetrahydro-1-benzofuran-2(3H)-one

Base Information

• Chemical Name: (3S,3aR,7aS)-3,6-dimethyl-3a,4,5,7a-tetrahydro-1-benzofuran-2(3H)-one
• CAS No.: 182699-80-5
• Molecular Formula: C₁₀H₁₄O₂
• Molecular Weight: 166.22
• Mol file: 182699-80-5.mol

Synonyms:(3S,3aR,7aS)-3,6-dimethyl-3a,4,5,7a-tetrahydro-1-benzofuran-2(3H)-one

Chemical Property of (3S,3aR,7aS)-3,6-dimethyl-3a,4,5,7a-tetrahydro-1-benzofuran-2(3H)-one

Chemical Property:

Purity/Quality:

Safty Information:

• Pictogram(s):  
• Hazard Codes: 

MSDS Files:

Useful:

Technology Process of (3S,3aR,7aS)-3,6-dimethyl-3a,4,5,7a-tetrahydro-1-benzofuran-2(3H)-one

There total 7 articles about (3S,3aR,7aS)-3,6-dimethyl-3a,4,5,7a-tetrahydro-1-benzofuran-2(3H)-one 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: 20.0%

(E)-3-methyl-1,3-butadien-1-yl (S)-2-methyl-3-butenoate → C10H14O2 + (-)-(3aS,3aS,7aR)-3a,4,5,7a-tetrahydro-3,6-dimethylbenzofuran-2(3H)-one (182699-77-0) + (3S,3aS,7aS)-3a,4,5,7a-tetrahydro-3,6-dimethylbenzofuran-2(3H)-one (182699-81-6) + (3S,3aR,7aS)-3,6-dimethyl-3a,4,5,7a-tetrahydro-1-benzofuran-2(3H)-one (182699-80-5) + (3R,3aR,7aS)-3,6-dimethyl-3,3a,4,5-tetrahydrobenzofuran-2(7aH)-one (182699-78-1)

Guidance literature:

In decalin; at 200 ℃; for 1h; Inert atmosphere;

DOI:10.1093/bbb/zbab045

Reference yield: 18.0%

(E)-3-methyl-1,3-butadien-1-yl (S)-2-methyl-3-butenoate → (-)-(3aS,3aS,7aR)-3a,4,5,7a-tetrahydro-3,6-dimethylbenzofuran-2(3H)-one (182699-77-0) + (3S,3aS,7aS)-3a,4,5,7a-tetrahydro-3,6-dimethylbenzofuran-2(3H)-one (182699-81-6) + (3S,3aR,7aS)-3,6-dimethyl-3a,4,5,7a-tetrahydro-1-benzofuran-2(3H)-one (182699-80-5) + (3R,3aR,7aS)-3,6-dimethyl-3,3a,4,5-tetrahydrobenzofuran-2(7aH)-one (182699-78-1)

Guidance literature:

In decalin; at 200 ℃; for 1h; Inert atmosphere;

DOI:10.1093/bbb/zbab045

Reference yield:

2-methylbut-3-enoic acid (53774-20-2) → (-)-(3aS,3aS,7aR)-3a,4,5,7a-tetrahydro-3,6-dimethylbenzofuran-2(3H)-one (182699-77-0) + (3S,3aS,7aS)-3a,4,5,7a-tetrahydro-3,6-dimethylbenzofuran-2(3H)-one (182699-81-6) + (3S,3aR,7aS)-3,6-dimethyl-3a,4,5,7a-tetrahydro-1-benzofuran-2(3H)-one (182699-80-5) + (3R,3aR,7aS)-3,6-dimethyl-3,3a,4,5-tetrahydrobenzofuran-2(7aH)-one (182699-78-1)

Guidance literature:

Multi-step reaction with 4 steps

1.1: (R)-1-phenyl-ethyl-amine / acetone / Inert atmosphere; Reflux

2.1: oxalyl dichloride / 3 h / 20 °C / Inert atmosphere

3.1: methyllithium / diethyl ether; 1,2-dimethoxyethane / 6 h / 20 °C / Inert atmosphere

3.2: 0.5 h / Inert atmosphere

4.1: decalin / 1 h / 200 °C / Inert atmosphere

With oxalyl dichloride; (R)-1-phenyl-ethyl-amine; methyllithium; In 1,2-dimethoxyethane; diethyl ether; acetone; decalin;

DOI:10.1093/bbb/zbab045

upstream raw materials:

2-methylbut-3-enoic acid

(S)-4-benzyl-N-butenoyloxazolidin-2-one

S(+)-2-methyl-3-butenoic acid

(S)-2-methyl-3-butenoyl chloride