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17555-94-1

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17555-94-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 17555-94-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,7,5,5 and 5 respectively; the second part has 2 digits, 9 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 17555-94:
(7*1)+(6*7)+(5*5)+(4*5)+(3*5)+(2*9)+(1*4)=131
131 % 10 = 1
So 17555-94-1 is a valid CAS Registry Number.

17555-94-1Relevant articles and documents

Transition-Metal-Free Matsuda-Heck Type Cross-Coupling and Mechanistic Evidence for a Radical Mechanism

Bergès, Julien,Zaid, Yassir,Tlili, Anis,Sotiropoulos, Jean-Marc,Taillefer, Marc

, p. 1559 - 1563 (2021)

The Matsuda-Heck reaction, usually performed with palladium catalysts, can be carried out under transition-metal-free conditions in the presence of a KOtBu/DMF couple. This system allows the selective and direct synthesis of stilbenes from aryldiazonium salts under mild temperature (20 °C). Mechanistic studies suggest a radical pathway in which the DMF acts as the initiator of the overall process.

Substituent Effects on Torsional Barriers: p-Methoxy- and p-Methoxy-p'-methyl-trans-stilbene

Siewert, Sonja S.,Spangler, Lee H.

, p. 9316 - 9324 (1995)

Jet-cooled fluorescence excitation spectra and selected single vibronic level dispersed fluorescence spectra are presented for p-methoxy-trans-stilbene and p-methoxy-p'-methyl-trans-stilbene.Two stable conformers of the methoxy group are evident in the sp

N-Heterocyclic carbene palladium (II)-pyridine (NHC-Pd (II)-Py) complex catalyzed heck reactions

Li, Dan,Tian, Qingqiang,Wang, Xuetong,Wang, Qiang,Wang, Yin,Liao, Siwei,Xu, Ping,Huang, Xin,Yuan, Jianyong

supporting information, p. 2041 - 2052 (2021/05/25)

A mild, efficient, and practical catalytic system for the synthesis of highly privileged stilbene pharmacophores is reported. This system uses N-heterocyclic carbene palladium (II) Pyridine (NHC-Pd (II)-Py) complex to catalyze the formation of carbon-carbon bonds between olefin derivatives and various bromide. This simple, gentle and user-friendly method can offer a variety of stilbene products in excellent yields under solvent-free condition. And its scale-up reaction has excellent yield and this system can be applied to industrial fields. The utility of this method is highlighted by its universality and modular synthesis of a series of bioactive molecules or important medical intermediates.

Tandem Acceptorless Dehydrogenative Coupling-Decyanation under Nickel Catalysis

Babu, Reshma,Balaraman, Ekambaram,Midya, Siba P.,Subaramanian, Murugan,Yadav, Vinita

, p. 7552 - 7562 (2021/06/28)

The development of new catalytic processes based on abundantly available starting materials by cheap metals is always a fascinating task and marks an important transition in the chemical industry. Herein, a nickel-catalyzed acceptorless dehydrogenative coupling of alcohols with nitriles followed by decyanation of nitriles to access diversely substituted olefins is reported. This unprecedented C=C bond-forming methodology takes place in a tandem manner with the formation of formamide as a sole byproduct. The significant advantages of this strategy are the low-cost nickel catalyst, good functional group compatibility (ether, thioether, halo, cyano, ester, amino, N/O/S heterocycles; 43 examples), synthetic convenience, and high reaction selectivity and efficiency.

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