Welcome to LookChem.com Sign In|Join Free

CAS

  • or
4-iodo-1-methoxy-3-(p-tolyl)-1H-pyrano[4,3-b]quinoline is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

1256286-01-7

Post Buying Request

1256286-01-7 Suppliers

Recommended suppliersmore

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

1256286-01-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1256286-01-7 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,5,6,2,8 and 6 respectively; the second part has 2 digits, 0 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1256286-01:
(9*1)+(8*2)+(7*5)+(6*6)+(5*2)+(4*8)+(3*6)+(2*0)+(1*1)=157
157 % 10 = 7
So 1256286-01-7 is a valid CAS Registry Number.

1256286-01-7Relevant articles and documents

Azidation vs [3?+?2]-cycloaddition: Chemoselective reaction of sodium azide towards o-alkynylaldehydes for the synthesis of N-heterocycles

Kumar, Pradeep,Garg, Vineeta,Verma, Akhilesh K.

, p. 1854 - 1859 (2019)

The chemoselective synthesis of functionalized azido- and triazolo-containing nitrogen heterocycles using sodium azide and o-alkynylaldehydes has been described. The azidation reaction was preferred in acetonitrile while the [3 + 2]-cycloaddition was favored in DMSO. Furthermore, the azido-pyranoquinolines were employed for the synthesis of benzonaphthyridines via the Staudinger reaction at room temperature.

Site-selective electrophilic cyclization and subsequent ring-opening: A synthetic route to pyrrolo[1,2-a]quinolines and indolizines

Aggarwal, Trapti,Kumar, Sonu,Dhaked, Devendra K.,Tiwari, Rakesh K.,Bharatam, Prasad V.,Verma, Akhilesh K.

, p. 8562 - 8573 (2012/11/07)

An efficient strategy for the synthesis of pyrrolo[1,2-a]quinolines and indolizines from pyranoquinolines via site-selective electrophilic cyclization and subsequent opening of pyran ring using silver/iodine under mild reaction conditions is described. Th

Pyrano[4,3-b]quinolines library generation via iodocyclization and palladium-catalyzed coupling reactions

Aggarwal, Trapti,Imam, Maryam,Kaushik, Naveen K.,Chauhan, Virander S.,Verma, Akhilesh K.

experimental part, p. 530 - 536 (2011/11/06)

Synthesis of a 80-member library of novel pyrano[4,3-b]quinolines in solution-phase is reported. The key intermediate, 4-iodopyrano[4,3-b]quinolines were synthesized by the electrophilic iodocyclization of corresponding ortho-alkynyl aldehydes in good to

Iodine-mediated solvent-controlled selective electrophilic cyclization and oxidative esterification of o-alkynyl aldehydes: An easy access to pyranoquinolines, pyranoquinolinones, and isocumarins

Verma, Akhilesh K.,Rustagi, Vineeta,Aggarwal, Trapti,Singh, Amit P.

experimental part, p. 7691 - 7703 (2010/12/29)

Chemoselective behavior of iodine in different solvents in the electrophilic iodocyclization of o-alkynyl aldehydes is described. o-Alkynyl aldehydes 3a-t on reaction with I2 in CH2Cl2 with appropriate nucleophiles provides pyrano[4,3-b]quinolines 4a-f, via formation of cyclic iodonium intermediate Q; however, using alcohols as a solvent as well as nucleophile, o-alkynyl esters 5a-y were obtained selectively in good to excellent yields via formation of hypoiodide intermediate R. Subsequently, o-alkynyl esters were converted in to pyranoquinolinones 6a-i and isocoumarin 6j by electrophilic iodocyclization. This developed oxidative esterification provides a novel access for the chemoselective synthesis of esters 5q-u from aldehydes 3n-p without oxidizing primary alcohol present in the substrate.

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 1256286-01-7