Welcome to LookChem.com Sign In|Join Free

CAS

  • or

104473-51-0

Post Buying Request

104473-51-0 Suppliers

Recommended suppliersmore

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

104473-51-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 104473-51-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,4,4,7 and 3 respectively; the second part has 2 digits, 5 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 104473-51:
(8*1)+(7*0)+(6*4)+(5*4)+(4*7)+(3*3)+(2*5)+(1*1)=100
100 % 10 = 0
So 104473-51-0 is a valid CAS Registry Number.

104473-51-0Relevant articles and documents

Asymmetric Mannich synthesis of α-amino esters by anion-binding catalysis

Wasa, Masayuki,Liu, Richard Y.,Roche, Stéphane P.,Jacobsen, Eric N.

, p. 12872 - 12875 (2014)

We report a scalable, one-pot Mannich route to enantioenriched α-amino esters by direct reaction of α-chloroglycine ester as a practical imino ester surrogate. The reaction is promoted by a chiral aminothiourea, which is proposed to operate cooperatively

Enantioselective Synthesis of α-Allyl Amino Esters via Hydrogen-Bond-Donor Catalysis

Bendelsmith, Andrew J.,Kim, Seohyun Chris,Wasa, Masayuki,Roche, Stéphane P.,Jacobsen, Eric N.

supporting information, p. 11414 - 11419 (2019/08/20)

We report a chiral-squaramide-catalyzed enantio- and diastereoselective synthesis of α-allyl amino esters. The optimized protocol provides access to N-carbamoyl-protected amino esters via nucleophilic allylation of readily accessible α-chloro glycinates. A variety of useful α-allyl amino esters were prepared, including crotylated products bearing vicinal stereocenters that are inaccessible through enolate alkylation, with high enantioselectivity (up to 97% ee) and diastereoselectivity (>10:1). The reactions display first-order kinetic dependence on both the α-chloro glycinate and the nucleophile, consistent with rate-limiting C-C bond formation. Computational analysis of the uncatalyzed reaction predicts an energetically inaccessible iminium intermediate, and a lower energy concerted SN2 mechanism.

A chiral α - amino acid derivative and its preparation method (by machine translation)

-

Paragraph 0093; 0096; 0097, (2018/01/03)

The invention discloses a chiral α - amino acid derivative and its preparation method. The invention α - chiral amino acid derivatives, its structural formula shown in formula I: Its preparation method, comprises the following steps: with the carbonyl compound to the N, O - acetal of the mixture with a chiral primary uncle diamine organic small molecule catalyst, strong and weak acid mixing, reaction, to obtain the chiral α - amino acid compounds; the carbonyl compound including aldehyde and/or ketone. The invention chiral α - amino acid ester compound having a simple structure of the chiral primary uncle diamine organic small molecule catalyst catalytic, solvent-free, one-step synthesis, simple, high-efficiency. (by machine translation)

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 104473-51-0