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76691-74-2

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76691-74-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 76691-74-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,6,6,9 and 1 respectively; the second part has 2 digits, 7 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 76691-74:
(7*7)+(6*6)+(5*6)+(4*9)+(3*1)+(2*7)+(1*4)=172
172 % 10 = 2
So 76691-74-2 is a valid CAS Registry Number.

76691-74-2Downstream Products

76691-74-2Relevant articles and documents

A Triple Photoredox/Cobalt/Br?nsted Acid Catalysis Enabling Markovnikov Hydroalkoxylation of Unactivated Alkenes

Matsuki, Yuki,Nagao, Kazunori,Nakagawa, Masanari,Ohmiya, Hirohisa

, (2022/05/04)

We demonstrate Markovnikov hydroalkoxylation of unactivated alkenes using alcohols through a triple catalysis consisting of photoredox, cobalt, and Br?nsted acid catalysts under visible light irradiation. The triple catalysis realizes three key elementary steps in a single catalytic cycle: (1) Co(III) hydride generation by photochemical reduction of Co(II) followed by protonation, (2) metal hydride hydrogen atom transfer (MHAT) of alkenes by Co(III) hydride, and (3) oxidation of the alkyl Co(III) complex to alkyl Co(IV). The precise control of protons and electrons by the three catalysts allows the elimination of strong acids and external reductants/oxidants that are required in the conventional methods.

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