7(R*)-bromo-1-methyl-4(S*)-isopropyl-6(R*)-<1(R*)-(p-tolylsulfonyl)-3-butynyl>bicyclo<3.1.1>heptan-6-ol

Base Information

• Chemical Name: 7(R*)-bromo-1-methyl-4(S*)-isopropyl-6(R*)-<1(R*)-(p-tolylsulfonyl)-3-butynyl>bicyclo<3.1.1>heptan-6-ol
• CAS No.: 137918-11-7
• Molecular Formula: C₂₂H₂₉BrO₃S
• Molecular Weight: 453.44
• Mol file: 137918-11-7.mol

Synonyms:7(R*)-bromo-1-methyl-4(S*)-isopropyl-6(R*)-<1(R*)-(p-tolylsulfonyl)-3-butynyl>bicyclo<3.1.1>heptan-6-ol

Chemical Property of 7(R*)-bromo-1-methyl-4(S*)-isopropyl-6(R*)-<1(R*)-(p-tolylsulfonyl)-3-butynyl>bicyclo<3.1.1>heptan-6-ol

Chemical Property:

Purity/Quality:

Safty Information:

• Pictogram(s):  
• Hazard Codes: 

MSDS Files:

Useful:

Technology Process of 7(R*)-bromo-1-methyl-4(S*)-isopropyl-6(R*)-<1(R*)-(p-tolylsulfonyl)-3-butynyl>bicyclo<3.1.1>heptan-6-ol

There total 3 articles about 7(R*)-bromo-1-methyl-4(S*)-isopropyl-6(R*)-<1(R*)-(p-tolylsulfonyl)-3-butynyl>bicyclo<3.1.1>heptan-6-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:

7(R*)-bromo-1-methyl-4(S*)-isopropyl-6(R*)-<1(R*)-(p-tolylsulfonyl)-4-(trimethylsilyl)-3-butynyl>bicyclo<3.1.1>heptan-6-ol (137918-00-4,138124-07-9) → 7(R*)-bromo-1-methyl-4(S*)-isopropyl-6(R*)-<1(R*)-(p-tolylsulfonyl)-3-butynyl>bicyclo<3.1.1>heptan-6-ol (137918-11-7)

Guidance literature:

With tetrabutyl ammonium fluoride; In tetrahydrofuran; for 1h; Ambient temperature;

Reference yield:

4-(p-tolysulfonyl)-1-(trimethylsilyl)-1-butyne (137917-97-6) → 7(R*)-bromo-1-methyl-4(S*)-isopropyl-6(R*)-<1(R*)-(p-tolylsulfonyl)-3-butynyl>bicyclo<3.1.1>heptan-6-ol (137918-11-7)

Guidance literature:

Multi-step reaction with 2 steps

1: 1.) n-butyllithium / 1.) hexane, THF, -78 deg C, 15 min, 2.) THF, hexane, -78 deg C, 4 h

2: 179 mg / Bu₄NF / tetrahydrofuran / 1 h / Ambient temperature

With n-butyllithium; tetrabutyl ammonium fluoride; In tetrahydrofuran;

Reference yield:

sodium 4-methylbenzenesulfinate (824-79-3) → 7(R*)-bromo-1-methyl-4(S*)-isopropyl-6(R*)-<1(R*)-(p-tolylsulfonyl)-3-butynyl>bicyclo<3.1.1>heptan-6-ol (137918-11-7)

Guidance literature:

Multi-step reaction with 3 steps

1: 62 percent / NaI / dimethylformamide / 1.) 80 deg C, 10 h, 2.) 40 deg C, 12 h

2: 1.) n-butyllithium / 1.) hexane, THF, -78 deg C, 15 min, 2.) THF, hexane, -78 deg C, 4 h

3: 179 mg / Bu₄NF / tetrahydrofuran / 1 h / Ambient temperature

With n-butyllithium; tetrabutyl ammonium fluoride; sodium iodide; In tetrahydrofuran; N,N-dimethyl-formamide;

upstream raw materials:

7(R*)-bromo-1-methyl-4(S*)-isopropyl-6(R*)-<1(R*)-(p-tolylsulfonyl)-4-(trimethylsilyl)-3-butynyl>bicyclo<3.1.1>heptan-6-ol

4-(p-tolysulfonyl)-1-(trimethylsilyl)-1-butyne

sodium 4-methylbenzenesulfinate

Downstream raw materials:

6-hydroxy-5(R*)-(p-tolylsulfonyl)-β-copaene

(±)-δ-cadinene

(+/-)-β-copaene

α-copaene