C₂₁H₂₀BrN₃O₃

Base Information

• Chemical Name: C₂₁H₂₀BrN₃O₃
• CAS No.: 1598418-86-0
• Molecular Formula: C₂₁H₂₀BrN₃O₃
• Molecular Weight: 442.312
• Mol file: 1598418-86-0.mol

Synonyms:C₂₁H₂₀BrN₃O₃

Chemical Property of C₂₁H₂₀BrN₃O₃

Chemical Property:

Purity/Quality:

Safty Information:

• Pictogram(s):  
• Hazard Codes: 

MSDS Files:

Useful:

Technology Process of C₂₁H₂₀BrN₃O₃

There total 4 articles about C₂₁H₂₀BrN₃O₃ 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: 95.0%

C22H22BrN3O3 (1598418-71-3) → C21H20BrN3O3 (1598418-86-0)

Guidance literature:

With boron tribromide; In dichloromethane; at 20 ℃; for 12h;

DOI:10.1016/j.tet.2014.03.061

Reference yield:

N-(tert-butoxycarbonyl)-O-methyl-D-tyrosine (68856-96-2) → C21H20BrN3O3 (1598418-86-0)

Guidance literature:

Multi-step reaction with 5 steps

1.1: sodium hydride / tetrahydrofuran; mineral oil / 0.25 h / 0 °C / Inert atmosphere

1.2: 20 °C / Inert atmosphere

2.1: thionyl chloride / methanol / 2.5 h / 0 °C / Inert atmosphere; Reflux

3.1: 2-bromo-1-ethylpyridin-1-ium tetrafluoroborate; benzotriazol-1-ol / dichloromethane / 0.5 h / 0 °C / Inert atmosphere

3.2: 20 °C / Inert atmosphere

4.1: hydrogenchloride / ethyl acetate / 2 h / 20 °C

5.1: boron tribromide / dichloromethane / 12 h / 20 °C

With hydrogenchloride; thionyl chloride; boron tribromide; 2-bromo-1-ethylpyridin-1-ium tetrafluoroborate; sodium hydride; benzotriazol-1-ol; In tetrahydrofuran; methanol; dichloromethane; ethyl acetate; mineral oil;

DOI:10.1016/j.tet.2014.03.061

Reference yield:

D-N-Me-Tyr(OMe)-OMe hydrochloride (1449611-43-1) → C21H20BrN3O3 (1598418-86-0)

Guidance literature:

Multi-step reaction with 3 steps

1.1: 2-bromo-1-ethylpyridin-1-ium tetrafluoroborate; benzotriazol-1-ol / dichloromethane / 0.5 h / 0 °C / Inert atmosphere

1.2: 20 °C / Inert atmosphere

2.1: hydrogenchloride / ethyl acetate / 2 h / 20 °C

3.1: boron tribromide / dichloromethane / 12 h / 20 °C

With hydrogenchloride; boron tribromide; 2-bromo-1-ethylpyridin-1-ium tetrafluoroborate; benzotriazol-1-ol; In dichloromethane; ethyl acetate;

DOI:10.1016/j.tet.2014.03.061

upstream raw materials:

C₂₂H₂₂BrN₃O₃

D-N-Me-Tyr(OMe)-OMe hydrochloride

N-(tert-butoxycarbonyl)-O-methyl-D-tyrosine

N-Boc-N,O-dimethyl-D-tyrosine