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34916-94-4

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34916-94-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 34916-94-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,4,9,1 and 6 respectively; the second part has 2 digits, 9 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 34916-94:
(7*3)+(6*4)+(5*9)+(4*1)+(3*6)+(2*9)+(1*4)=134
134 % 10 = 4
So 34916-94-4 is a valid CAS Registry Number.

34916-94-4Downstream Products

34916-94-4Relevant articles and documents

Asymmetric synthesis of α-substituted nitriles and cyanohydrins by oxidative cleavage of chiral aldehyde hydrazones with magnesium monoperoxyphthalate

Enders, Dieter,Plant, Andrew,Backhaus, Dirk,Reinhold, Ulrich

, p. 10699 - 10714 (2007/10/02)

Optically active α- and α,β-substituted aldehyde hydrazones 2, 4, and 7, which are readily available by assymmetric alkylation, Michael addition or [2,3]-Wittig rearrangement of chiral hydrazones can be transformed into nitriles 3 and 5 or cyanohydrins 8 by MMPP mediated oxidation, respectively. This synthetic sequence offers a C-C connective entry into optically active functionalised nitriles with good overall yields (30-75%) together with high diastereo- and enantioselectivities (de = 76 - ≥ 96%, ee ≥ 72 - ≥ 97%).

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