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952116-25-5

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952116-25-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 952116-25-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 9,5,2,1,1 and 6 respectively; the second part has 2 digits, 2 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 952116-25:
(8*9)+(7*5)+(6*2)+(5*1)+(4*1)+(3*6)+(2*2)+(1*5)=155
155 % 10 = 5
So 952116-25-5 is a valid CAS Registry Number.

952116-25-5Relevant academic research and scientific papers

Synthesis of 1H-Pyrrolo[1,2-a]indoles via Lewis Acid-Catalyzed Annulation of Propargylic Alcohols with 2-Ethynylanilines

Du, Li-Juan,Han, Ya-Ping,Liang, Yong-Min,Zhang, Hong-Yu,Zhang, Yuecheng,Zhao, Jiquan

, (2020)

A novel highly efficient, environmentally benign Lewis acid-catalyzed, and protection-free protocol for the construction of valuable polycyclic products bearing a 1H-pyrrolo[1,2-a]indole scaffold is described, starting from readily available propargylic alcohols and 2-ethynylanilines. The one-pot transformation entails the cleavage of one C?O bond, and the construction of two C?N bonds and one C?C double bond. This unique operationally simple method is performed under mild conditions and in air, producing water as the only byproduct; it is scalable and demonstrates good functional group compatibility and broad scope.

Copper-Catalyzed Trifluoromethylation/Cyclization of Alkynes for Synthesis of Dioxodibenzothiazepines

Zhang, Zi-Qi,Xu, Yi-Hao,Dai, Jing-Cheng,Li, Yan,Sheng, Jie,Wang, Xi-Sheng

supporting information, p. 2194 - 2198 (2021/04/05)

A facile and efficient approach for the synthesis of the CF3-containing dioxodibenzothiazepines has been developed via copper-catalyzed trifluoromethylation/cyclization of alkynes utilizing a radical relay strategy. This method has demonstrated low cataly

Copper-Catalyzed Enantioselective C-H Arylation between 2-Arylindoles and Hypervalent Iodine Reagents

Liang, Hao,Zhu, Guoxun,Pu, Xiaoyun,Qiu, Liqin

supporting information, p. 9246 - 9250 (2021/12/06)

The copper-catalyzed enantioselective C-H arylation between 2-arylindoles and hypervalent iodine reagents has been successfully developed, which provides a convenient and economical route to the highly atroposelective synthesis of axially chiral indole de

Design and synthesis of mycobacterial pks13 inhibitors: Conformationally rigid tetracyclic molecules

Zhang, Wei,Liu, Ling-ling,Lun, Shichun,Wang, Shuang-Shuang,Xiao, Shiqi,Gunosewoyo, Hendra,Yang, Fan,Tang, Jie,Bishai, William R.,Yu, Li-Fang

, (2021/02/03)

We previously reported a series of coumestans?a naturally occurring tetracyclic scaffold containing a δ-lactone?that effectively target the thioesterase domain of polyketide synthase 13 (Pks13) in Mycobacterium tuberculosis (Mtb), resulting in superior an

Photoinduced Radical Cascade Cyclization: A Metal-Free Approach to Access Difluoroalkylated Dioxodibenzothiazepines

Deng, Yinglan,Jian, Jing-Xin,Lu, Maojian,Tong, Qing-Xiao,Xiao, Qian,Zhong, Jian-Ji

supporting information, p. 9303 - 9308 (2021/12/06)

A simple and mild photoredox catalytic approach to access difluoroalkylated dioxodibenzothiazepines in high regioselectivity via radical cascade cyclization has been described herein. In contrast to previous methods, this strategy does not involve the use

Synthesis of hexahydropyrrolo[2,3-b]indole alkaloids based on the aza-Pauson-Khand-type reaction of alkynecarbodiimides

Aburano, Daisuke,Yoshida, Tatsunori,Miyakoshi, Naoki,Mukai, Chisato

, p. 6878 - 6884 (2008/02/10)

(Chemical Equation Presented) Upon treatment with 30 mol % of Co 2(CO)8 and 30 mol % of TMTU in toluene at 70°C, benzene-bridged alkynecarbodiimides efficiently underwent a ring-closing reaction to give the pyrrolo[2,3-b]-indol-2-ones in good yields. These conditions could nearly suppress the formation of the urea derivatives, which were consistently observed when 10 mol % of Co2(CO)8 and 60 mol % of TMTU in benzene were used. The synthesis of the eight hexahydropyrrolo[2,3-b]indole alkaloids was accomplished from the resulting pyrrolo[2,3-b]indol-2-ones via the introduction of an angular substituent at the C3a-position by treatment with NaBH4/alkyl bromide as the crucial step.

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