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87938-32-7

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87938-32-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 87938-32-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,7,9,3 and 8 respectively; the second part has 2 digits, 3 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 87938-32:
(7*8)+(6*7)+(5*9)+(4*3)+(3*8)+(2*3)+(1*2)=187
187 % 10 = 7
So 87938-32-7 is a valid CAS Registry Number.

87938-32-7Downstream Products

87938-32-7Relevant articles and documents

Stereoselective Retentive Domino Transmetalations of Secondary Alkyllithium Compounds to Functionalized Secondary Alkylcopper Reagents

Moriya, Kohei,Simon, Meike,Mose, Rasmus,Karaghiosoff, Konstantin,Knochel, Paul

supporting information, p. 10963 - 10967 (2015/09/15)

Functionalized secondary alkyllithium reagents obtained by I/Li exchange from the corresponding secondary alkyl iodides undergo two successive transmetalations with Me3SiCH2ZnBr.LiBr and CuBr.2LiCl.Me2S to provide functionalized secondary alkylcopper compounds with high retention of configuration. These alkylcopper derivatives react further with electrophiles such as alkynyl esters, acid chlorides, allylic chlorides, ketals, ethylene oxide, and 3-iodocyclopentanone with high retention of configuration. A related sequence of transmetalations with MeMgI and LaCl3.2LiCl allows a retentive addition of secondary alkyllithium reagents to acetone. The influence of the solvent on the configurational stability of secondary alkylzinc reagents is described.

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