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(-)-(S)-1-Naphthyl p-tolyl sulphoxide is a chiral organosulfur compound characterized by its unique structure, which consists of a naphthalene ring connected to a phenyl ring through a sulfur atom. The naphthalene ring is substituted with a methyl group at the para position, while the phenyl ring is substituted with a methyl group at the ortho position. (-)-(S)-1-naphthyl p-tolyl sulphoxide is known for its optical activity, as it exists in two enantiomeric forms, with the (-)-(S)-enantiomer being the one described. It is often used in organic synthesis, particularly in the preparation of chiral ligands and catalysts, due to its ability to induce asymmetry in chemical reactions. The compound's properties, such as its reactivity and stability, make it a valuable tool in the field of asymmetric synthesis, where the creation of enantiomerically pure compounds is crucial for pharmaceutical and chemical applications.

1669-20-1

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1669-20-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1669-20-1 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 1,6,6 and 9 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 1669-20:
(6*1)+(5*6)+(4*6)+(3*9)+(2*2)+(1*0)=91
91 % 10 = 1
So 1669-20-1 is a valid CAS Registry Number.

1669-20-1Relevant academic research and scientific papers

Kinetic Resolution of Sulphoxides by Chiral Poly(N-Alkyliminoalanes)

Annunziata, Rita,Borgogno, Guido,Montanari, Fernando,Quici, Silvio,Cucinella, Salvatore

, p. 113 - 118 (1981)

Kinetic resolution of racemic sulphoxides by chiral poly (PIA-PHETs) from (+) - or (-)-1-phenylethylamine is described.For p-tolyl mesityl sulphoxide in the temperature range between -25 and 85 deg C, optical yields increase with temperature to an upper limit of between 55 and 70 deg C, with enantiomeric enrichments up to 75percent.It is shown that, among the three molecular species of PIA-PHET (closed-cage tetramer, closed-cage hexamer and open-cage tetramer), only the last is chemically active and capable of chiral recognition.Reactions follow second-order kinetics (first-order in sulphoxide, first-order in open PIA-PHET tetramer).The particular molecular structure of the latter probably accounts for the high degree of chiral recognition at high temperature.

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