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311310-18-6

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311310-18-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 311310-18-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,1,1,3,1 and 0 respectively; the second part has 2 digits, 1 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 311310-18:
(8*3)+(7*1)+(6*1)+(5*3)+(4*1)+(3*0)+(2*1)+(1*8)=66
66 % 10 = 6
So 311310-18-6 is a valid CAS Registry Number.

311310-18-6Relevant articles and documents

Efficient parallel resolution of pentafluorophenyl active esters using quasi-enantiomeric combinations of oxazolidin-2-ones

Shaye, Najla Al,Chavda, Sameer,Coulbeck, Elliot,Eames, Jason,Yohannes, Yonas

experimental part, p. 439 - 463 (2011/06/17)

The parallel resolution of racemic pentafluorophenyl 2-aryl/ phenylpropanoates and butanoates using an equimolar combination of quasi-enantiomeric Evans oxazolidin-2-ones is discussed. The levels of diastereoselectivity were excellent (>90% de) leading to separable quasi-enantiomeric oxazolidin-2-ones in good yield. This methodology was used to resolve a series of structurally related 2-aryl/phenylpropanoic and butanoic acids.

Resolution of pentafluorophenyl esters using oxazolidin-2-ones

Al Shaye, Najla,Eames, Jason

scheme or table, p. 5892 - 5895 (2010/11/18)

A series of structurally related racemic pentafluorophenyl active esters were resolved using an equimolar amount of (S)-4-phenyloxazolidin-2-one. The levels of diastereocontrol were found to be excellent (80-96% de) at ~40% conversion.

Investigations into the parallel kinetic resolution of 2-phenylpropanoyl chloride using quasi-enantiomeric oxazolidinones

Chavda, Sameer,Coulbeck, Elliot,Coumbarides, Gregory S.,Dingjan, Marco,Eames, Jason,Ghilagaber, Stephanos,Yohannes, Yonas

, p. 3386 - 3399 (2007/10/03)

The resolution of 2-phenylpropanoyl chloride using an equimolar combination of quasi-enantiomeric oxazolidinones is discussed. The levels of diastereoselectivity were found to be dependent upon the structural nature of the metallated oxazolidinone, temperature and metal counter-ion.

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