Welcome to LookChem.com Sign In|Join Free

CAS

  • or

1207836-10-9

Post Buying Request

1207836-10-9 Suppliers

Recommended suppliersmore

  • Product
  • FOB Price
  • Min.Order
  • Supply Ability
  • Supplier
  • Contact Supplier

1207836-10-9 Usage

Uses

6-bromo-4-methoxypyrazolo[1,5-a]pyridine-3-carbonitrile is an organic intermediate for laboratory R&D processes.

Synthesis

The DMF 10L solution of 2,4,6-trimethylbenzenesulfonic acid 3-bromo-5-methoxypyridinamine salt 2000g (4.96mol, 1.0eq), 2-chloropropene cyanide (7.44mol, 1.5eq) was added with potassium carbonate 684g (4.96mol, 1.0eq) and stirred at 20-30°C for 8h. Then the mixtrue was heated with dropwise 1132g (7.44mol, 1.5eq) of diazabicyclo at 50-60°C for 20h. After the reaction is finished and poured into water 30 L at RT. the solution was filtered, washed with water and recrystallized in ethanol to give a pale yellow solid, 6-bromo-4-methoxypyrazolo[1,5-a]pyridine-3-carbonitrile (702g 56%).

Check Digit Verification of cas no

The CAS Registry Mumber 1207836-10-9 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,0,7,8,3 and 6 respectively; the second part has 2 digits, 1 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 1207836-10:
(9*1)+(8*2)+(7*0)+(6*7)+(5*8)+(4*3)+(3*6)+(2*1)+(1*0)=139
139 % 10 = 9
So 1207836-10-9 is a valid CAS Registry Number.

1207836-10-9Relevant articles and documents

Regioselective Synthesis of Pyrazolo[1,5- a]pyridine via TEMPO-Mediated [3 + 2] Annulation-Aromatization of N-Aminopyridines and α,β-Unsaturated Compounds

Wang, Amu,Liu, Ya-Zhou,Shen, Zhongke,Qiao, Zeen,Ma, Xiaofeng

supporting information, p. 1454 - 1459 (2022/03/01)

A TEMPO-mediated [3 + 2] annulation-aromatization protocol for the preparation of pyrazolo[1,5-a]pyridines from N-aminopyridines and α,β-unsaturated compounds was developed. The procedure offered multisubstituted pyrazolo[1,5-a]pyridines in good to excellent yield with high and predictable regioselectivity. The modification of marketed drugs including Loratadine, Abiraterone, and Metochalcone, and a one-pot three-step gram scale synthesis of key intermediate for the preparation of Selpercatinib were demonstrated. Mechanism studies show that TEMPO serves both as a Lewis acid and as an oxidant.

Compound used as RET kinase inhibitor and application thereof

-

Paragraph 0227-0230; 0235-0236, (2021/07/01)

The invention relates to a compound used as an RET kinase inhibitor and application thereof, wherein the compound has a structure as shown in a formula F, has good inhibition capability on RET kinase, and has good pharmacodynamic and pharmacokinetic performance and lower toxic and side effects.

RET inhibitor, pharmaceutical composition comprising same and application of RET inhibitor and pharmaceutical composition in medicines

-

Paragraph 0253-0254, (2021/11/10)

The invention belongs to the field of medicines, and relates to an RET inhibitor, a pharmaceutical composition comprising the same and application of the RET inhibitor and the pharmaceutical composition in medicines. Specifically, the invention relates to

Post a RFQ

Enter 15 to 2000 letters.Word count: 0 letters

Attach files(File Format: Jpeg, Jpg, Gif, Png, PDF, PPT, Zip, Rar,Word or Excel Maximum File Size: 3MB)

1

What can I do for you?
Get Best Price

Get Best Price for 1207836-10-9