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22772-29-8

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22772-29-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 22772-29-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,2,7,7 and 2 respectively; the second part has 2 digits, 2 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 22772-29:
(7*2)+(6*2)+(5*7)+(4*7)+(3*2)+(2*2)+(1*9)=108
108 % 10 = 8
So 22772-29-8 is a valid CAS Registry Number.

22772-29-8Relevant articles and documents

Transition-metal-free base catalyzed intramolecular cyclization of 2-ynylphenols for efficient and facile synthesis of 2-substituted benzo[b]furans

Liu, Yong,Lu, Tao,Tang, Wei-Fang,Gao, Jian

, p. 28637 - 28641 (2018)

A transition-metal-free base catalyzed intramolecular cyclization of 2-ynylphenols was developed for the facile synthesis of 2-substituted benzo[b]furans. Various 2-aryl and 2-alkyl substituted benzo[b]furans can be obtained with good to excellent yields

N-Heterocyclic Carbene-Palladium(II)-1-Methylimidazole Complex Catalyzed Direct C-H Bond Arylation of Benzo[b]furans with Aryl Chlorides

Yin, Shun-Chao,Zhou, Quan,Zhao, Xiao-Yun,Shao, Li-Xiong

, p. 8916 - 8921 (2015/09/15)

The first example of sole direct C-H bond arylation of benzo[b]furans with aryl chlorides was achieved catalyzed by a well-defined NHC-Pd(II)-Im complex. Under the suitable conditions, all reactions involving kinds of benzo[b]furans and (hetero)aryl chlor

One-Pot preparation of 2-arylbenzofurans from oximes with diaryliodonium triflate

Miyagi, Kotaro,Moriyama, Katsuhiko,Togo, Hideo

, p. 2122 - 2136 (2015/01/09)

A variety of 2-arylbenzofurans were obtained in good yields by the O-arylation of oximes with diaryliodonium triflates, followed by the treatment with HCl in dioxane under warming conditions through the [3,3]-sigmatropic reaction. The present reaction is one-pot transition metal-free method for the preparation of various 2-arylbenzofurans from oximes, which are easily available from the reaction of alkyl aryl ketones with hydroxylamine.

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