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83767-73-1

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83767-73-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 83767-73-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,3,7,6 and 7 respectively; the second part has 2 digits, 7 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 83767-73:
(7*8)+(6*3)+(5*7)+(4*6)+(3*7)+(2*7)+(1*3)=171
171 % 10 = 1
So 83767-73-1 is a valid CAS Registry Number.

83767-73-1Relevant articles and documents

An expeditious and efficient bromomethylation of thiols: Enabling bromomethyl sulfides as useful building blocks

Silva-Cuevas, Carolina,Paleo, Ehecatl,León-Rayo, David F.,Lujan-Montelongo, J. Armando

, p. 24654 - 24659 (2018/07/25)

A facile and highly efficient method for the bromomethylation of thiols, using paraformaldehyde and HBr/AcOH, has been developed, which advantageously minimizes the generation of highly toxic byproducts. The preparation of 22 structurally diverse α-bromomethyl sulfides illustrates the chemo-tolerant applicability while bromo-lithium exchange and functionalization sequences, free radical reductions, and additions of the title compounds demonstrate their synthetic utility.

Process to produce a protease inhibitor

-

, (2008/06/13)

Disclosed is a novel process and novel intermediates to prepare [R-(R*,R*)]-N-[3-[1-[5,6-dihydro-4-hydroxy-2-oxo-6-(2-phenylethyl)-6-propyl-2H-pyran-3-yl]propyl]phenyl]-5-(trifluoromethyl)-2-pyridinesulfonamide (XIX) which is a protease inhibitor useful in treating humans infected with the HIV virus.

Desilylative Pummerer-like Rearrangement of α-Trimethylsilyl-substituted Sulphoxides and Sulphides: Formation of α-Acyloxy and α-Halogeno Sulphides

Ishibashi, Hiroyuki,Nakatani, Hiroshi,Maruyama, Kazumi,Minami, Kenjiro,Ikeda, Masazumi

, p. 1443 - 1445 (2007/10/02)

α-Trimethylsilyl-substituted sulphoxides and sulphides undergo rearrangement with loss of the silyl group when treated respectively with trifluoroacetic anhydride and with N-halogenosuccinimide in the presence of trifluoroacetic acid, giving α-acyloxy sulphides and α-halogeno sulphides.

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