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90696-21-2

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90696-21-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 90696-21-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,0,6,9 and 6 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 90696-21:
(7*9)+(6*0)+(5*6)+(4*9)+(3*6)+(2*2)+(1*1)=152
152 % 10 = 2
So 90696-21-2 is a valid CAS Registry Number.

90696-21-2Relevant articles and documents

Flexible Construction of Functionalized-Pyrroles under Palladium or Copper Catalysis in the Presence of BF3 ? Et2O

Guo, Wusheng,Liu, Teng,Liu, Yin,Wei, Kun,Yan, Biwei

supporting information, (2022/01/26)

We have developed a flexible approach enabling the access to highly functionalized pyrroles under palladium or copper catalysis in the presence of BF3 ? Et2O. This catalytic methodology utilizes commercially available amines as react

Transition-metal-free and facile synthesis of 3-alkynylpyrrole-2,4-dicarboxylates from methylene isocyanides and propiolaldehyde

Chen, Xiaojuan,Fu, Liping,Huo, Xiaoli,Shao, Jiaan,Yu, Liya,Zeng, Linghui,Zhang, Chong,Zhang, Jiankang,Zhu, Huajian

supporting information, p. 16430 - 16433 (2021/10/01)

A transition-metal-free, facile and efficient method for the synthesis of 3-alkynylpyrrole-2,4-dicarboxylates from methylene isocyanides and propiolaldehyde with moderate to good yields has been developed. The direct transformation process and good tolerance of various substituents make it an alternative approach to previous protocols, and potential applications of these investigated compounds are expected with or without post-modifications.

Micelle-Mediated Trimerization of Ynals to Orthogonally Substituted 4H-Pyrans in Water: Downstream Rearrangement to Bioactive 2,8-dioxabicyclo[3.3.1]nona-3,6-diene Frameworks

Rashid, Showkat,Bhat, Bilal A.,Mehta, Goverdhan

supporting information, p. 6646 - 6651 (2021/10/14)

An efficient trimerization of ynals to diversely substituted 4H-pyran constructs has been executed in water, under ambient conditions employing micellar catalysis. The method is in agreement with the ideas of green and sustainable chemistry. The locus of the micellar reaction site has been probed through proton NMR studies. A general acid-mediated downstream rearrangement of the derived 4H-pyrans to interesting 2,8-dioxabicyclo[3.3.1]nona-3,6-dienes has been observed.

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