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19031-66-4

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19031-66-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 19031-66-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,9,0,3 and 1 respectively; the second part has 2 digits, 6 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 19031-66:
(7*1)+(6*9)+(5*0)+(4*3)+(3*1)+(2*6)+(1*6)=94
94 % 10 = 4
So 19031-66-4 is a valid CAS Registry Number.

19031-66-4Relevant articles and documents

Dehydroxylative Fluorination of Tertiary Alcohols

Zhang, Wei,Gu, Yu-Cheng,Lin, Jin-Hong,Xiao, Ji-Chang

supporting information, p. 6642 - 6646 (2020/09/02)

A large number of fluorination methods have been developed, but the construction of a tertiary C-F bond remains challenging. Herein, we describe an efficient dehydroxylative fluorination of tertiary alcohols with Selectfluor via the activation of a hydroxyl group by a Ph2PCH2CH2PPh2/ICH2CH2I system. Although the reagents appear to be not compatible (Selectfluor with the phosphine and I- generated in situ), the reactions occur rapidly to give the desired products in moderate to high yields. This work may present a new discovery in fluorination of alcohols since the reported methods are mainly limited to primary and secondary alcohols.

Predictable site-selective radical fluorination of tertiary ethers

Ma, Junyang,Xu, Wentao,Xie, Jin

, p. 187 - 191 (2019/11/21)

In this communication, we disclose the first example of metal-free and site-selective radical fluorination of readily available tertiary alkyl ethers, enabled by synergistic photocatalysis and organocatalysis. This catalytic combination allows for exclusi

Photoredox-catalyzed deoxyfluorination of activated alcohols with Selectfluor

González-Esguevillas, María,Miró, Javier,Jeffrey, Jenna L.,MacMillan, David W.C.

supporting information, p. 4222 - 4227 (2019/06/13)

Herein we disclose a deoxyfluorination of alcohols with an electrophilic fluorine source via visible-light photoredox catalysis. This radical-mediated C–F coupling is capable of fluorinating secondary and tertiary alcohols efficiently, complementing previously reported nucleophilic deoxyfluorination protocols.

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