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Spiro[cyclopentane-1,2'-indolin]-3'-one is a complex organic compound with a unique spiro structure, consisting of a cyclopentane ring fused to an indoline ring. This molecule is characterized by its tricyclic structure, with the cyclopentane ring sharing a common carbon atom with the indoline ring. The compound has a ketone functional group at the 3' position, which is crucial for its chemical properties and potential applications. Spiro[cyclopentane-1,2'-indolin]-3'-one is of interest in the field of organic chemistry, particularly in the synthesis of complex molecular architectures and the study of spiro compounds. Its specific applications may vary depending on the context, but it generally serves as a building block for more complex molecules or as a subject of study in understanding the behavior of spiro compounds in chemical reactions and their potential biological activities.

4669-18-5

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4669-18-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 4669-18-5 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 4,6,6 and 9 respectively; the second part has 2 digits, 1 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 4669-18:
(6*4)+(5*6)+(4*6)+(3*9)+(2*1)+(1*8)=115
115 % 10 = 5
So 4669-18-5 is a valid CAS Registry Number.

4669-18-5Relevant academic research and scientific papers

Alkylation of Cycloalkanoindoles via Indolylmagnesium Salts: Synthesis of 3H-Indoles and Oxidative Rearrangement to Spiro-3'-ones

Rodriguez, Jose-Gonzalo,Andres, Angel San

, p. 1293 - 1299 (2007/10/02)

Alkylation of cycloalkanoindolylmagnesium iodide with alkyl halides has been analyzed to prepare cycloalkano-3H-indoles, methyl and N,N-dimethylpropyl derivatives.Spiro derivatives appear as secondary products in this reaction.Selectivity and optimization of the reaction has been determined and a mechanism for the formation of the spiro derivative is proposed.

Oxidation of 2,3-Disubstituted Indoles with m-Chloroperbenzoic Acid. Formation of o-Aminophenol Derivatives and a Dimeric Product

Hino, Tohru,Yamaguchi, Hitoshi,Matsuki, Kenji,Nakano, Kumiko,Sodeoka, Mikiko,Nakagawa, Masako

, p. 141 - 146 (2007/10/02)

Oxidation of tetrahydrocarbazole (5) with m-chloroperbenzoic acid in methylene dichloride at -60 deg C gave the N-benzoyl-o-aminophenol (11) togehter with the hydroxy-3H-indole (7) and the indol-3(2H)-one (9).The N-benzoyl-o-aminophenol (11) was found to be derived from the hydroxy-4aH-carbazole (7) via an unstable tertiary amine intermediate (17) by further oxidation.The N-benzoyl-o-aminophenol (11) was also obtained by the oxidation of the other hydroxy-3H-indoles (18), (19), and (24).On the other hand, similar oxidation of N-methyl-tetrahydrocarbazole (6) gave the hydroxyenamine (28) and its dimer (27), and of 2,3-diphenylindole (31) and the N-methyl derivative (30) gave the hydroxy-3H-indole (19) and the ketoamide (33), while the 1,4-benzoxazine derivatives (34) and (35) were obtained in the case of the N-acetyl derivative (32).

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