been developed, enabling benign synthesis of valuable benzofuroindolines under sustainable conditions. Mechanistic studies revealed the dual role of iron porphyrin responsible for both phenol oxidation and Lewis acid activation, which differs from the well-explored chemistry of hemin in carbene and nitrene insertion reactions. A preliminary experiment with cytochrome c showed that the turnover of iron
已开发了用于在水溶液中氧化苯酚-吲哚[3 + 2]偶联的hemin / H 2 O 2催化系统,可在可持续条件下良性合成有价值的苯并呋喃二氢吲哚。机理研究揭示了卟啉铁既负责酚氧化又负责路易斯酸活化的双重作用,这与血红素在卡宾和氮烯插入反应中的化学研究方法不同。细胞色素c的初步实验表明,卟啉铁的转换适合大分子环境,效率很高(约13 300 TON)。
Chiral Primary Amine Catalyzed
<i>α</i>
‐Arylation of Simple Ketones via Asymmetric Retro‐Claisen Cleavage
作者:Yanfang Han、Mingying Shi、Xueling Mi、Sanzhong Luo
DOI:10.1002/chem.202202584
日期:2022.12.20
C−C cleavage to arylation. Enantioselective α-arylation of simple aliphatic ketones has been achieved via chiral primary amine catalyzed asymmetric retro-Claisen cleavage involving β-diketones and para-quinone monoimines that facilitates the construction of α-aryl tertiary carbon stereocenters in good yields and high enantioselectivities.
Halogenation of N-substituted p-quinone imines and p-quinone oxime esters: IV. Chlorination and bromination of N-arylsulfonyl-2(3)-methyl(2-chloro)-1,4-benzoquinone monoimines
作者:A. P. Avdeenko、S. A. Konovalova
DOI:10.1134/s1070428006030031
日期:2006.3
The addition of halogens to N-arylsulfonyl-1,4-benzoquinone imines, which exist in a solution as Z and E isomers, is controlled by the steric factor. Z-E Isomerization strongly affects the stability of cyclohexene structures formed by halogenation of 1,4-benzoquinone imines. The halogenation of N-arylsulfonyl-1,4-benzoquinone imines was found to be accompanied by prototropic rearrangement.
GUSTINYA, D. V.;MARKAVA, EH. YA.;FREJMANIS, YA. F.;GLEZER, V. T.;STRADYN,+, ZH. OBSHCH. XIMII, 60,(1990) N, S. 289-295
作者:GUSTINYA, D. V.、MARKAVA, EH. YA.、FREJMANIS, YA. F.、GLEZER, V. T.、STRADYN,+
DOI:——
日期:——
MARKAVA EH. YA.; KANEPE D. V.; LOKMANE EH. YA.; FREJMANIS YA. F., LATV. PSR ZINATNU ASAD. VESTIS. KIM. SER., IZV. AN LATVSSR. CEP. XIM., 19+
作者:MARKAVA EH. YA.、 KANEPE D. V.、 LOKMANE EH. YA.、 FREJMANIS YA. F.