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150196-71-7

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150196-71-7 Usage

Uses

4-Oxo-2-oxetanecarboxylic Acid Ethyl Ester is the ethyl ester derivative of 4-Oxo-2-oxetanecarboxylic Acid (O858455); a building block in copolymers which are used as coating materials for medical devices.

Check Digit Verification of cas no

The CAS Registry Mumber 150196-71-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,0,1,9 and 6 respectively; the second part has 2 digits, 7 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 150196-71:
(8*1)+(7*5)+(6*0)+(5*1)+(4*9)+(3*6)+(2*7)+(1*1)=117
117 % 10 = 7
So 150196-71-7 is a valid CAS Registry Number.

150196-71-7Downstream Products

150196-71-7Relevant articles and documents

Chiral dirhodium(II) carboxamidate-catalyzed [2 + 2]-cycloaddition of TMS-ketene and ethyl glyoxylate

Forslund, Raymond E.,Cain, James,Colyer, John,Doyle, Michael P.

, p. 87 - 92 (2007/10/03)

The [2 + 2]-cycloaddition reaction between ethyl glyoxylate and trimethylsilylketene is reported. Enantiomeric excesses up to 83% have been achieved with the use of only 1.0 mol % of a previously unreported chiral imidazolidinone-ligated dirhodium(II) carboxamidate catalyst. An extensive survey of chiral catalysts has shown that enantiocontrol for cycloaddition increases as the steric bulk of the ligand is increased. However, enantioselectivity is increased to 99% ee by the addition of 10 mol % of quinine as a co-catalyst with a chiral dirhodium(II) azetidinone-ligated catalyst, and there is a significant decrease in reaction time.

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