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Anodic Oxidation of Aliphatic and Aromatic Amides, Bisamides and Related Derivatives
ChemElectroChem ( IF 4 ) Pub Date : 2024-03-26 , DOI: 10.1002/celc.202400023
James Y. Becker 1
Affiliation  

The current comprehensive review covers four main parts, of which some are presented in the form of a personal account. 1. Anodic oxidation of a) N‐alkyl and N,N‐diallyl carbonyl moieties, b) Azacycloalkyl amides and the effect of ring‐size on the outcome, c) Lactams, d) Sulfonamides, and e) The effect of a substituent R attached to carbonyl (N−CO−R) or sulfonamides (N−SO2R) on their oxidation potentials. 2. Anodic oxidation of aromatic amides, in particular of type Ph2CHCONHAr, lacking hydrogen(s) at the α‐position to nitrogen. They undergo three types of bond‐cleavage, yielding a variety of fragmentation products. 3. a) Anodic oxidation of symmetrical bisamides of type ZCONH(CH2)nNHCOZ (Z=Me, Ph, Ar; n=2–4) under constant current electrolysis, in methanol. For n=3, 4 they afford mostly mono‐ and dimethoxylation products. For n=2 they undergo ′CH2−CH2′ bond cleavage to yield fragmentation products. b) Anodic oxidation of symmetrical bisamides of type ArCONH(CH2)2NHCOAr under controlled potential electrolysis, in acetonitrile, leads to gem‐unsymmetrical bisamides of type ArCONHCH2NHCOMe as the major product, in fair yields. 4. Utilization of the anodic process in organic synthesis to form C−C bonds by both intra‐ and inetrmolecular processes; as well as C−O and C−N bonds for generating heterocycles.

中文翻译:

脂肪族和芳香族酰胺、双酰胺及相关衍生物的阳极氧化

目前的全面审查主要包括四个部分,其中一些部分以个人账户的形式呈现。 1. a) N-烷基和 N,N-二烯丙基羰基部分的阳极氧化,b) 氮杂环烷基酰胺以及环大小对结果的影响,c) 内酰胺,d) 磺酰胺,以及 e) 取代基的影响R 连接到羰基 (N−CO−R) 或磺酰胺 (N−SO2R) 的氧化电位。 2.芳香酰胺的阳极氧化,特别是Ph型芳香酰胺的阳极氧化2CHCONHAr,氮的 α 位缺少氢。它们经历三种类型的键断裂,产生各种碎片产物。 3. a) ZCONH(CH 型对称双酰胺) 的阳极氧化2nNHCOZ (Z=Me, Ph, Ar; n=2–4) 在恒流电解下,在甲醇中。对于 n=3、4,它们主要提供单甲氧基化产物和二甲氧基化产物。对于 n=2,它们经历 'CH2-CH2' 键断裂产生碎片产物。 b) ArCONH(CH) 型对称双酰胺的阳极氧化22NHCOAr 在乙腈中受控电位电解,导致宝石‐ArCONHCH 型不对称双酰胺2NHCOMe 作为主要产品,产量还算不错。 4. 利用有机合成中的阳极过程通过两者形成 C−C 键内-内特分子过程;以及用于生成杂环的 C−O 和 C−N 键。
更新日期:2024-03-26
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