Welcome to LookChem.com Sign In|Join Free

CAS

  • or

16650-28-5

Post Buying Request

16650-28-5 Suppliers

Recommended suppliersmore

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

16650-28-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 16650-28-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,6,6,5 and 0 respectively; the second part has 2 digits, 2 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 16650-28:
(7*1)+(6*6)+(5*6)+(4*5)+(3*0)+(2*2)+(1*8)=105
105 % 10 = 5
So 16650-28-5 is a valid CAS Registry Number.

16650-28-5Relevant articles and documents

Reactivity of α-(benzoyloxy)crotylstannane with aldehydes in liquid phase and on solid support. Synthesis of substituted lactones

Cossy,Rasamison,Pardo

, p. 7195 - 7198 (2007/10/03)

-

Substrate-directed diastereoselective hydroformylations, 1: Substrate-directed diastereoselective hydroformylation of methallylic alcohols - Development of an efficient catalyst-directing group for rhodium-catalyzed hydroformylation

Breit, Bernhard

, p. 1841 - 1851 (2007/10/03)

The development of an efficient catalyst-directing group based on ortho-diphenylphosphanyl benzoate (o-DPPB) for the substrate-directed, diastereoselective hydroformylation of methallylic alcohols 5 is described. The hydroformylation of methallylic o-DPPB esters 9 provides the corresponding syn-aldehydes 10 with diastereoselectivities of up to 96:4. A specific steric demand of the substituent at the stereogenic center of the methallylic derivatives 9 was found to be necessary to achieve a high degree of stereoselectivity. Experiments have been performed that prove that the o-DPPB group acts as a catalyst-directing group by reversibly coordinating to the catalyst. The removal of the o-DPPB group was accomplished by means of alkaline hydrolysis, thereby furnishing the lactols 6. Oxidation of 6 provides the corresponding γ-lactones 7. VCH Verlagsgesellschaft mbH, 1997.

Synthesis of Optically Active (E)-1-Alkoxymethoxybut-2-enyl(tributyl)stannanes: Stereochemistry of their Thermal Reactions with Aldehydes

Jephcote, Vincent J.,Pratt, Andrew J.,Thomas, Eric J.

, p. 1529 - 1535 (2007/10/02)

(1R)- and (1S)-1--(E)-but-2-enyl(tributyl)stannanes (8) and (9), whose configurations were assigned by correlation with (2R)- and (2S)-pentan-2-ol (14) and (15), react stereoselectively on heating with benzaldehyde to give (3S,4S)- and (3R,4R)-4-hydroxy-3-methyl-(Z)-1,2-enol ethers (16) and (18), respectively, the configurations of these products being established by correlation with pseudoephedrine.

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 16650-28-5