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20359-09-5

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20359-09-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 20359-09-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,0,3,5 and 9 respectively; the second part has 2 digits, 0 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 20359-09:
(7*2)+(6*0)+(5*3)+(4*5)+(3*9)+(2*0)+(1*9)=85
85 % 10 = 5
So 20359-09-5 is a valid CAS Registry Number.

20359-09-5Relevant articles and documents

Synthesis of 2,3-cis stereomeric emetamines via Reissert compounds

Reimann, Eberhard,Renz, Manfred

, p. 211 - 218 (2007)

Alkylation of Reissert compounds with certain benzoquinolizinone derivatives followed by hydrolytic cleavage afforded the core of the title compounds in a two step sequence. Finally, the lactam intermediates were reduced with DIBAH giving the target compo

Development of Pd(OAc)2-catalyzed tandem oxidation of C[sbnd]N, C[sbnd]C, and C(sp3)–H bonds: Concise synthesis of 1-aroylisoquinoline, oxoaporphine, and 8-oxyprotoberberine alkaloids

Nishimoto, Saeko,Nakahashi, Hiromichi,Toyota, Masahiro

, (2020/11/13)

A catalytic tandem oxidation of C[sbnd]N, C[sbnd]C, and C(sp3)–H bonds is developed. This tandem oxidation is applied to two-step total syntheses of papaveraldine and pulcheotine A. Additionally, the total synthesis of liriodenine is achieved in six steps from homopiperonyl alcohol and 2-bromophenylacetonitrile by applying this catalytic tandem oxidation. Moreover, the direct conversion of xylopinine to 8-oxypseudopalmatine in a 76% yield demonstrates the versatility of this catalytic reaction.

Novel total syntheses of oxoaporphine alkaloids enabled by mild Cu-catalyzed tandem oxidation/aromatization of 1-Bn-DHIQs

Zheng, Bo,Qu, Hui-Ya,Meng, Tian-Zhuo,Lu, Xia,Zheng, Jie,He, Yun-Gang,Fan, Qi-Qi,Shi, Xiao-Xin

, p. 28997 - 29007 (2018/08/29)

Novel total syntheses of oxoaporphine alkaloids such as liriodenine, dicentrinone, cassameridine, lysicamine, oxoglaucine and O-methylmoschatoline were developed. The key step of these total syntheses is Cu-catalyzed conversion of 1-benzyl-3,4-dihydro-isoquinolines (1-Bn-DHIQs) to 1-benzoyl-isoquinolines (1-Bz-IQs) via tandem oxidation/aromatization. This novel Cu-catalyzed conversion has been studied in detail, and was successfully used for constructing the 1-Bz-IQ core.

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