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6249-81-6

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6249-81-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 6249-81-6 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 6,2,4 and 9 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 6249-81:
(6*6)+(5*2)+(4*4)+(3*9)+(2*8)+(1*1)=106
106 % 10 = 6
So 6249-81-6 is a valid CAS Registry Number.

6249-81-6Relevant articles and documents

Selective Aerobic Oxygenation of Tertiary Allylic Alcohols with Molecular Oxygen

Zhu, Bencong,Shen, Tao,Huang, Xiaoqiang,Zhu, Yuchao,Song, Song,Jiao, Ning

, p. 11028 - 11032 (2019/07/08)

Aerobic epoxidation of tertiary allylic alcohols remains a significant challenge. Reported here is an efficient and highly chemoselective copper-catalyzed epoxidation and semipinacol rearrangement reaction of tertiary allylic alcohols with molecular oxygen. The solvent 1,4-dioxane activates dioxygen, thereby precluding the addition of a sacrificial reductant.

Nonenzymatic kinetic resolution of α-aryl substituted allylic alcohols catalyzed by acyl transfer catalyst Np-PIQ

Jiang, Shan-Shan,Gu, Bo-Qi,Zhu, Ming-Yu,Yu, Xingxin,Deng, Wei-Ping

, p. 1187 - 1191 (2015/02/19)

Chiral α-aryl substituted allylic alcohols are important versatile synthetic intermediates. We report here an effective nonenzymatic kinetic resolution of racemic α-aryl substituted allylic alcohols by introducing different aryl groups with acyl transfer

C2-symmetric cyclic selenium-catalyzed enantioselective bromoaminocyclization

Chen, Feng,Tan, Chong Kiat,Yeung, Ying-Yeung

supporting information, p. 1232 - 1235 (2013/03/28)

A catalytic asymmetric bromocyclization of trisubstituted olefinic amides that uses a C2-symmetric mannitol-derived cyclic selenium catalyst and a stoichiometric amount of N-bromophthalimide is reported. The resulting enantioenriched pyrrolidine products, which contain two stereogenic centers, can undergo rearrangement to yield 2,3-disubstituted piperidines with excellent diastereoselectivity and enantiospecificity.

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