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1684-07-7

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1684-07-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1684-07-7 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 1,6,8 and 4 respectively; the second part has 2 digits, 0 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 1684-07:
(6*1)+(5*6)+(4*8)+(3*4)+(2*0)+(1*7)=87
87 % 10 = 7
So 1684-07-7 is a valid CAS Registry Number.
InChI:InChI=1/C21H14O2/c22-21-18-14-8-7-13-17(18)19(15-9-3-1-4-10-15)20(23-21)16-11-5-2-6-12-16/h1-14H

1684-07-7Relevant articles and documents

Effect of Cp-Ligand Methylation on Rhodium(III)-Catalyzed Annulations of Aromatic Carboxylic Acids with Alkynes: Synthesis of Isocoumarins and PAHs for Organic Light-Emitting Devices

Molotkov, Alexander P.,Arsenov, Mikhail A.,Kapustin, Daniil A.,Muratov, Dmitry V.,Shepel', Nikolay E.,Fedorov, Yury V.,Smol'yakov, Alexander F.,Knyazeva, Elena I.,Lypenko, Dmitry A.,Dmitriev, Artem V.,Aleksandrov, Alexey E.,Maltsev, Eugeny I.,Loginov, Dmitry A.

, p. 334 - 345 (2020)

An efficient protocol was developed for the synthesis of π-extended isocoumarins and polycyclic aromatic hydrocarbons based on the oxidative coupling of aromatic carboxylic acids with internal alkynes catalyzed by (cyclopentadienyl)rhodium complexes. The

Cp*IrIII-catalyzed oxidative coupling of benzoic acids with alkynes

Frasco, Daniel A.,Lilly, Cassandra P.,Boyle, Paul D.,Ison, Elon A.

, p. 2421 - 2429 (2013)

Cp*Ir(III) complexes have been shown to catalyze the oxidative coupling of benzoic acids with alkynes in methanol at 60 C to form a variety of isocoumarins. The use of AgOAc as an oxidant was required to facilitate significant product formation. Alkyl alkynes were shown to be more reactive substrates than aryl alkynes, and a number of functional groups were tolerated on benzoic acid. Combined mechanistic and computational studies (BP86) revealed that (1) C-H activation occurs via an acetate-assisted mechanism; (2) C-H activation is not turnover limiting; and (3) the oxidant oxidizes the reduced form of the catalyst via an Ir(I)-Ir(II)-Ir(III) sequence.

Cationic iridacarboranes [3-(arene)-3,1,2-IrC2B9H11]+ and [3-(MeCN)3-3,1,2-IrC2B9H11]+: Synthesis, reactivity, and bonding. Catalysis of oxidative coupling

Loginov, Dmitry A.,Belova, Alena O.,Vologzhanina, Anna V.,Kudinov, Alexander R.

, p. 232 - 240 (2015)

(Arene)iridacarboranes [3-(arene)-3,1,2-IrC2B9H11]+ (arene = benzene (1a), toluene (1b), o-xylene (1c), m-xylene (1d), durene (1e)) were synthesized by reaction of [(cod)IrCl]2 with Tl[Tl(η-7,8-C

Computational Characterization of the Mechanism for the Oxidative Coupling of Benzoic Acid and Alkynes by Rhodium/Copper and Rhodium/Silver Systems

Funes-Ardoiz, Ignacio,Maseras, Feliu

, p. 12383 - 12388 (2018)

DFT calculations were applied to study the oxidative coupling between benzoic acid and 1-phenyl-1-propyne catalyzed by [CpRhCl2]2 (Cp=cyclopentadienyl) by using either Cu(OAc)2(H2O) or Ag(OAc) as the terminal ox

Rhodacarboranes as catalysts for oxidative coupling of benzoic acid with diphenylacetylene

Loginov,Belova,Kudinov

, p. 983 - 986 (2014)

Rhodacarboranes [(9-SMe2-7,8-Me2-C2B9H8)RhCl2]2, [(1-ButNH-1,7,9-C3B8H10)-RhI2]2, [(9-SMe2-7,8-C

Easy Access to Versatile Catalytic Systems for C?H Activation and Reductive Amination Based on Tetrahydrofluorenyl Rhodium(III) Complexes

Kharitonov, Vladimir B.,Runikhina, Sofiya A.,Nelyubina, Yulia V.,Muratov, Dmitry V.,Chusov, Denis,Loginov, Dmitry A.

supporting information, p. 10903 - 10912 (2021/06/28)

On the basis of the 1,2,3,4-tetrahydrofluorenyl ligand, a simple approach was developed to new effective rhodium catalysts for the construction of C?C and C?N bonds. The halide compounds [(η5-tetrahydrofluorenyl)RhX2]2 (2

Synthesis of Benzo-Fused Cyclic Compounds via Rhodium-Catalyzed Decarboxylative Coupling of Aromatic Carboxylic Acids with Alkynes

Inai, Yasuhito,Usuki, Yoshinosuke,Satoh, Tetsuya

supporting information, p. 3029 - 3036 (2021/04/15)

The decarboxylative coupling of diversely substituted benzoic acids with internal alkynes proceeds smoothly in the presence of a [RhCl(cod)] 2/1,2,3,4-tetraphenyl-1,3-cyclopentadiene catalyst system to selectively produce highly substituted nap

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