(S)-2'-amino-3-(p-tolyl)-5'H-spiro[chromeno[2,3-b]pyridine-5,4'-oxazol]-7-ol

Base Information

• Chemical Name: (S)-2'-amino-3-(p-tolyl)-5'H-spiro[chromeno[2,3-b]pyridine-5,4'-oxazol]-7-ol
• CAS No.: 1215867-39-2
• Molecular Formula: C₂₁H₁₇N₃O₃
• Molecular Weight: 359.384
• Mol file: 1215867-39-2.mol

Synonyms:(S)-2'-amino-3-(p-tolyl)-5'H-spiro[chromeno[2,3-b]pyridine-5,4'-oxazol]-7-ol

Chemical Property of (S)-2'-amino-3-(p-tolyl)-5'H-spiro[chromeno[2,3-b]pyridine-5,4'-oxazol]-7-ol

Chemical Property:

Purity/Quality:

Safty Information:

• Pictogram(s):  
• Hazard Codes: 

MSDS Files:

Useful:

Technology Process of (S)-2'-amino-3-(p-tolyl)-5'H-spiro[chromeno[2,3-b]pyridine-5,4'-oxazol]-7-ol

There total 1 articles about (S)-2'-amino-3-(p-tolyl)-5'H-spiro[chromeno[2,3-b]pyridine-5,4'-oxazol]-7-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: 89.0%

(S)-2'-amino-3-bromo-5'H-spiro[chromeno[2,3-b]pyridin-5,4'-oxazol]-7-ol (1215867-38-1) + 4-methylphenylboronic acid (5720-05-8) → (S)-2'-amino-3-(p-tolyl)-5'H-spiro[chromeno[2,3-b]pyridine-5,4'-oxazol]-7-ol (1215867-39-2)

Guidance literature:

With potassium carbonate; tetrakis(triphenylphosphine) palladium⁽⁰⁾; In 1,4-dioxane; water; at 80 ℃; for 0.833333h; Inert atmosphere; Sealed vial;

Reference yield: 89.0%

N,N-phenylbistrifluoromethane-sulfonimide (37595-74-7) + (S)-2'-amino-3-(p-tolyl)-5'H-spiro[chromeno[2,3-b]pyridine-5,4'-oxazol]-7-ol (1215867-39-2) → (S)-2′-amino-3-(p-tolyl)-5'H-spiro[chromeno[2,3-b]pyridine-5,4'-oxazol]-7-yl trifluoromethanesulfonate (1215867-40-5)

Guidance literature:

With triethylamine; In dichloromethane; for 4h;

Reference yield:

(S)-2'-amino-3-(p-tolyl)-5'H-spiro[chromeno[2,3-b]pyridine-5,4'-oxazol]-7-ol (1215867-39-2) → (S)-7-(2-fluoropyridin-3-yl)-3-(p-tolyl)-5'H-spiro[chromeno[2,3-b]pyridine-5,4'-oxazol]-2'-amine (1215867-37-0)

Guidance literature:

Multi-step reaction with 2 steps

1: triethylamine / dichloromethane / 4 h

2: potassium carbonate / tetrakis(triphenylphosphine) palladium⁽⁰⁾ / 1,4-dioxane; water / 2 h / 80 °C / Inert atmosphere; Sealed vial

With potassium carbonate; triethylamine; tetrakis(triphenylphosphine) palladium⁽⁰⁾; In 1,4-dioxane; dichloromethane; water; 2: Suzuki Coupling;

upstream raw materials:

(S)-2'-amino-3-bromo-5'H-spiro[chromeno[2,3-b]pyridin-5,4'-oxazol]-7-ol

4-methylphenylboronic acid

Downstream raw materials:

(S)-2′-amino-3-(p-tolyl)-5'H-spiro[chromeno[2,3-b]pyridine-5,4'-oxazol]-7-yl trifluoromethanesulfonate

(S)-7-(2-fluoropyridin-3-yl)-3-(p-tolyl)-5'H-spiro[chromeno[2,3-b]pyridine-5,4'-oxazol]-2'-amine