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68267-69-6

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68267-69-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 68267-69-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,8,2,6 and 7 respectively; the second part has 2 digits, 6 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 68267-69:
(7*6)+(6*8)+(5*2)+(4*6)+(3*7)+(2*6)+(1*9)=166
166 % 10 = 6
So 68267-69-6 is a valid CAS Registry Number.

68267-69-6Relevant articles and documents

Synthesis of functionalized indoles via palladium-catalyzed cyclization of N-(2-allylphenyl) benzamide: A method for synthesis of indomethacin precursor

Chang, Zhe,Dong, Zheng,Ma, Tong,Zhang, Yu,Zhao, Depeng,Zhao, Heng

supporting information, (2020/03/19)

We developed an efficient method for synthesis of substituted N-benzoylindole via Pd(II)-catalyzed C-H functionalization of substituted N-(2-allylphenyl)benzamide. The reaction showed a broad substrate scope (including N-acetyl and N-Ts substrates) and substituted indoles were obtained in good to excellent yields. The most distinctive feature of this method lies in the high selectivity for N-benzoylindole over benzoxazine, and this is the first example of Pd(II)-catalyzed synthesis of substituted N-benzoylindole. Notably, this new method was applied for the synthesis of key intermediate of indomethacin.

2-(Phenylseleno)ethanesulfon-amide as a novel protecting group for aniline that can be deprotected by a radical reaction

Kihara, Nobuhiro,Mitsuhashi, Yuji,Sato, Makoto,Hirose, Shun-Ichi,Goudo, Erika,Uzawa, Yoshinori,Shirai, Natsumi,Hamamoto, Sari,Iwasaki, Ryo,Fujioka, Akane

, p. 2563 - 2566 (2016/06/06)

Anilines were protected as 2-(phenylseleno)ethanesulfonanilide (SeES anilide) via sulfonylation by 2-chlorosulfonyl chloride followed by the conjugate addition of benzeneselenol. The SeES anilide was deprotected by radical reduction using tributyltin hydride in the presence of AIBN. The corresponding anilines were obtained in high yields when the hydride and AIBN were added to the system slowly. Since the radical reaction proceeds under neutral conditions, chemoselective deprotection of the SeES group was accomplished. The SeES anilide was stable under various conditions, including some severe conditions.

Bond-Weakening Catalysis: Conjugate Aminations Enabled by the Soft Homolysis of Strong N-H Bonds

Tarantino, Kyle T.,Miller, David C.,Callon, Ted A.,Knowles, Robert R.

supporting information, p. 6440 - 6443 (2015/06/08)

The ability of redox-active metal centers to weaken the bonds in associated ligands is well precedented, but has rarely been utilized as a mechanism of substrate activation in catalysis. Here we describe a catalytic bond-weakening protocol for conjugate a

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