174500-20-0 Usage
Chemical Properties
White solid
Reactions
1. Ligand for Copper catalyzed syn-selective Mukaiyama aldol reaction.
2. Ligand for Tin catalyzed anti-selective aldol reaction.
3. Ligand for Ytterbuim catalyzed desymmetrization of meso epoxides.
4. Ligand for Copper catalyzed enantioselective addition of terminal alkynes to imines.
5. Ligand for Scandium catalyzed enantioselective syn-selective ene reactions.
6. Ligand for Copper catalysed asymmetric alkynylation of cyclic azomethine Imines.
7. Ligand for Europium catalyzed asymmetric alpha amination.
8. Ligand for Indium catalyzed enantioselective construction of spiro-fused 2-oxindole/α-methylene-γ-butyrolactones.
9. Ligand for Copper catalyzed asymmetric azide-alkyne cycloaddition to quaternary oxindoles.
10. Ligand for Iron catalyzed enantioselective nitrene transfer to sulfides.
11. Ligand for Copper catalyzed enantioselective intramolecular propargylic amination.
12. Ligand for Copper catalyzed asymmetric hydroxylation.
13. Ligand for Scandium catalyzed dearomatization of 2-naphthols by electrophilic amination.
14. Ligand for Copper catalyzed asymmetric alkynylation of oxocarbenium ions to set diaryl tetrasubstituted stereoceters.
Check Digit Verification of cas no
The CAS Registry Mumber 174500-20-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,4,5,0 and 0 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 174500-20:
(8*1)+(7*7)+(6*4)+(5*5)+(4*0)+(3*0)+(2*2)+(1*0)=110
110 % 10 = 0
So 174500-20-0 is a valid CAS Registry Number.
174500-20-0Relevant articles and documents
Kinetic resolution by copper-catalyzed azide-alkyne cycloaddition
Meng, Jun-Cai,Fokin, Valery V.,Finn
, p. 4543 - 4546 (2007/10/03)
The use of chiral pybox ligands imparts enantioselectivity to the Cu I-catalyzed azide-alkyne cycloaddition reaction, in the form of kinetic resolution of α-chiral azides and desymmetrization of gem-diazides. While levels of selectivity are modest, the results show unequivocally that the process benefits from ligand-accelerated catalysis.
Synthesis of asymmetric iron-pybox complexes and their application to aziridine forming reactions
Redlich, Mark,Hossain, M. Mahmun
, p. 8987 - 8990 (2007/10/03)
The synthesis of a series of iron-pybox complexes and their employment in the catalytic asymmetric aziridine forming reaction is presented. When AgSbF6 is used as an initiator, the i-pr- and t-bu-pybox complexes produce 47% of the cis-aziridine
Asymmetric ring opening of meso epoxides with TMSCN catalyzed by (pybox)lanthanide complexes.
Schaus,Jacobsen
, p. 1001 - 1004 (2007/10/03)
The asymmetric ring opening of meso epoxides with TMSCN is catalyzed by (pybox)YbCl3 complexes, yielding the beta-trimethylsilyloxy nitrile ring-opened products with good enantioselectivities (83-92% ee). The reaction exhibits a second-order kinetic depen