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64908-64-1

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64908-64-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 64908-64-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,4,9,0 and 8 respectively; the second part has 2 digits, 6 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 64908-64:
(7*6)+(6*4)+(5*9)+(4*0)+(3*8)+(2*6)+(1*4)=151
151 % 10 = 1
So 64908-64-1 is a valid CAS Registry Number.

64908-64-1Relevant articles and documents

Total Synthesis of (±)-Impatien A via Aza-Heck Cyclization

Korch, Katerina M.,Watson, Donald A.

supporting information, p. 7285 - 7289 (2021/09/14)

The first total synthesis of the natural product impatien A is described. This concise synthesis features an aza-Heck cyclization to construct the complex spirocyclic ring system and provides a rare example of the use of aza-Heck cyclizations in complex molecule synthesis. To enable this key cyclization of an electrophilic nitrogen atom with a tetrasubstituted alkene, we utilized high-throughput experimentation to identify a new ligand and ultimately deliver impatien A in seven steps from known compounds.

Synthesis of ortho-phenolic sulfilimines via an intermolecular sulfur atom transfer cascade reaction

Ren, Yan,Song, Yinan,Xiong, Feng,Xu, Shaojian,Zhang, Linxing,Zhang, Xinhao,Zuo, Yingying

supporting information, p. 3799 - 3803 (2020/06/08)

To expand the toolbox for the synthesis of ortho-phenolic sulfilimines, sigmatropic rearrangements were introduced to the field of sulfilimine chemistry. Herein we report a N-H sulfenylation/[2,3]-sigmatropic rearrangement cascade reaction. This mild reaction enables commercially available thiols to serve as the sulfenylation reagent and generates water as the sole byproduct. Moreover, the reaction has a wide substrate scope and can be conducted on a gram scale with excellent reaction efficiency.

Dual Directing-Groups-Assisted Redox-Neutral Annulation and Ring Opening of N-Aryloxyacetamides with 1-Alkynylcyclobutanols via Rhodium(III)-Catalyzed C-H/C-C Activations

Pan, Jin-Long,Liu, Chang,Chen, Chao,Liu, Tuan-Qing,Wang, Man,Sun, Zhenliang,Zhang, Shu-Yu

supporting information, p. 2823 - 2827 (2019/04/30)

A cascade [3 + 2] annulation and ring opening of N-aryloxyacetamides with 1-alkynylcyclobutanols via Rh(III)-catalyzed redox-neutral C-H/C-C activations using internal oxidative O-NHAc and -OH as the dual directing groups has been achieved. This reaction provided an efficient and regioselective approach to benzofuran derivatives with good functional group compatibility and high yields.

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