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138373-91-8

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138373-91-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 138373-91-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,8,3,7 and 3 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 138373-91:
(8*1)+(7*3)+(6*8)+(5*3)+(4*7)+(3*3)+(2*9)+(1*1)=148
148 % 10 = 8
So 138373-91-8 is a valid CAS Registry Number.

138373-91-8Downstream Products

138373-91-8Relevant articles and documents

Photoredox Catalytic Three-Component Amidoazidation of 1,3-Dienes

Forster, Dan,Guo, Weisi,Wang, Qian,Zhu, Jieping

, p. 10871 - 10877 (2021)

In spite of the obvious synthetic potential of functionalized allylic azides, only limited synthetic routes have been developed. We report herein a three-component 1,2-amidoazidation of 1,3-dienes. In the presence offac-Ir(ppy)3under blue LED irradiation, reaction of 1-aryl substituted 1,3-dienes withN-amidopyridinium salt and trimethylsilyl azide (TMSN3) affords exclusively the 1,2-amidoazidation products. The 1-alkyl substituted counterparts undergo the same reaction with moderate to high 1,2- vs 1,4-selectivity. Reduction of this mixture with PPh3under dynamic kinetic conditions enriches significantly one of the two isomers thanks to the facile 1,3-azide shift (Winstein rearrangement) of the allyl azides.

SYNTHESIS OF 1,2-AMINOAZIDES. CONVERSION TO UNSYMMETRICAL VICINAL DIAMINES BY CATALYTIC HYDROGENATION OR REDUCTIVE ALKYLATION WITH DICHLOROBORANES.

Benalil, Aziza,Carboni, Bertrand,Vaultier, Michel

, p. 8177 - 8194 (2007/10/02)

1,2-aminoazides are easily prepared from 1,2-amino alcohols.Catalytic hydrogenation in the presence of palladium on charcoal or reductive alkylation with dichloroboranes afford with good yields unsymmetrically substituted vicinal diamines.

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