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59181-30-5

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59181-30-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 59181-30-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,9,1,8 and 1 respectively; the second part has 2 digits, 3 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 59181-30:
(7*5)+(6*9)+(5*1)+(4*8)+(3*1)+(2*3)+(1*0)=135
135 % 10 = 5
So 59181-30-5 is a valid CAS Registry Number.

59181-30-5Relevant articles and documents

Oxidative electro-organic synthesis of dimeric hexahydropyrrolo-[2,3-: B] indole alkaloids involving PCET: Total synthesis of (±)-folicanthine

Bisai, Alakesh,Khatua, Arindam,Paul, Amit,Sharma, Sulekha,Shaw, Kundan

, p. 9390 - 9395 (2021/11/17)

An efficient electrochemical oxidation strategy for the total synthesis of a dimeric hexahydropyrrolo[2,3-b]indole alkaloid, (±)-folicanthine (1b), has been envisioned. Control experiments suggest that a PCET pathway involving stepwise electron transfer f

Candida antarctica lipase-B-catalyzed kinetic resolution of 1,3-dialkyl-3-hydroxymethyl oxindoles

Kumar, Naveen,Kumar, Akshay,Sahoo, Subash Chandra,Chimni, Swapandeep Singh

, p. 1377 - 1394 (2020/11/23)

Candida antarctica (CAL-B) lipase-catalyzed resolution of 1,3-dialkyl-3-hydroxymethyl oxindoles has been performed to obtain (R)-1,3-dialkyl-3-acetoxymethyl oxindoles with up to 99% ee and (S)-1,3-dialkyl-3-hydroxymethyl oxindoles with up to 78% ee using vinyl acetate as acylating agent and acetonitrile as solvent transforming (S)-3-allyl-3-hydroxymethyl oxindole to (3S)-1′-benzyl-5-(iodomethyl)-4,5-dihydro-2H-spiro[furan-3,3′-indolin]-2′-one. The optically active 3-substituted-3-hydroxymethyl oxindoles and spiro-oxindoles are among the key synthons in the synthesis of potentially biologically active molecules.

Nucleophilic Ring Opening of Donor-Acceptor Cyclopropanes with the Cyanate Ion: Access to Spiro[pyrrolidone-3,3′-oxindoles]

Zaytsev, Sergey V.,Ivanov, Konstantin L.,Skvortsov, Dmitry A.,Bezzubov, Stanislav I.,Melnikov, Mikhail Ya.,Budynina, Ekaterina M.

, p. 8695 - 8709 (2018/06/22)

The nucleophilic ring opening of donor-acceptor cyclopropanes with the cyanate ion is reported for the first time. Cyclopropanes, spiro-activated with oxindole fragments as acceptors, are shown to undergo transformations into biologically relevant spiro[pyrrolidone-3,3′-oxindoles] while being treated with potassium cyanate under microwave assistance.

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