Welcome to LookChem.com Sign In|Join Free

CAS

  • or

91153-93-4

Post Buying Request

91153-93-4 Suppliers

Recommended suppliersmore

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

91153-93-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 91153-93-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,1,1,5 and 3 respectively; the second part has 2 digits, 9 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 91153-93:
(7*9)+(6*1)+(5*1)+(4*5)+(3*3)+(2*9)+(1*3)=124
124 % 10 = 4
So 91153-93-4 is a valid CAS Registry Number.

91153-93-4Relevant articles and documents

Copper-Mediated SN2′ Allyl-Alkyl and Allyl-Boryl Couplings of Vinyl Cyclic Carbonates

Miralles, Núria,Gómez, José Enrique,Kleij, Arjan W.,Fernández, Elena

, p. 6096 - 6099 (2017/11/27)

A method for the copper-catalyzed borylmethylation and borylation of vinyl cyclic carbonates through an SN2′ mechanism is reported. These singular reactions involve selective SN2′ allylic substitutions with concomitant ring opening of the cyclic carbonate and with extrusion of CO2 and formation of a useful hydroxyl functionality in a single step. The stereoselectivity of the homoallylic borylation and allylic borylation processes can be controlled, and synthetically useful unsaturated (E)-pent-2-ene-1,5-diols and (E)-but-2-ene-1,4-diols are accessed.

Grignard Addition Reactions to 1,4-Difunctionalized But-2-ynes

Silva, Anthony N. De,Francis, Craig L.,Ward, A. David

, p. 1657 - 1672 (2007/10/02)

Trisubstituted alkenes of E geometry have been prepared by anti addition of Grignard reagents to 1,4-difunctionalized but-2-ynes.Addition of primary, secondary and aromatic Grignard reagents to but-2-yne-1,4-diol provided (E)-2-substituted but-2-ene-1,4-diols as major products along with the corresponding 2-substituted buta-2,3-dien-1-ols.Addition of phenylmagnesium bromide to the mono- and di-methyl ethers of but-2-yne-1,4-diol gave 2,3-diphenyl-1,3-diene.Treatment of 4-dimethylaminobut-2-yn-1-ol with primary alkyl and alkenyl Grignard reagents afforded the 2-substituted anti addition product regiospecifically, stereospecifically and in high yield.Reaction of 1-dimethylamino-4-methoxybut-2-yne with butylmagnesium bromide provided only the 3-substituted anti addition product in good yield.

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 91153-93-4