负载在石墨C 3 N 4上的二维MoS 2纳米复合材料纳米片材已经通过简便的超声方法制备,随后证明了其催化几种吲哚衍生物合成的能力。通过使用不同的显微镜和光谱技术了解其结构和理化性质,详细表征了所制备的纳米复合催化剂。随后,这种纳米复合催化剂被用作非均相多功能催化剂,以在水性介质中合成数种经C3官能化的吲哚。所采用的策略还为合成具有医学意义的吲哚的各种前体(例如5-羟色胺,褪黑激素和各种β-咔啉生物碱)提供了非常好的催化剂可回收性和多功能性。此外,通过使用这种方法,已在克级上制备了天然产物衍生物。此外,
We describe a direct construction of all-carbon quaternary centers from secondary C(sp3)–H substrates through a dehydrogenativecross-couplingreaction. Using FeCl2·4H2O as the catalyst and employing air (molecular oxygen) as the terminal oxidant, the cross-coupling of indolin-2-ones with indoles proceeded smoothly under mild, ligand-free and base-free conditions, providing 3,3-disubstituted oxindoles
Facile synthesis of 3,3-di(heteroaryl)indolin-2-one derivatives catalyzed by ceric ammonium nitrate (CAN) under ultrasound irradiation
作者:Shun-Yi Wang、Shun-Jun Ji
DOI:10.1016/j.tet.2005.11.011
日期:2006.2
Ceric ammonium nitrate efficiently catalyzes the reaction of isatin with indoles under sonic waves to afford symmetrical 3,3-di(indolyl)indolin-2-ones in excellent yields, as well as the reaction of 3-hydroxy-3-indolylindolin-2-ones with indoles, pyrrole to afford the corresponding adducts in excellent yields, which provides an efficient route to the synthesis of symmetrical and unsymmetrical 3,3-
heterogeneous multifunctional catalyst to synthesize several C3‐functionalized indoles in the aqueous medium. The employed strategy also provided very good catalyst recyclability and versatility for the synthesis of various precursors of medicinally significant indoles, such as serotonin, melatonin, and various β‐carboline alkaloids. In addition, a natural product derivate has been prepared on the gram‐scale by
负载在石墨C 3 N 4上的二维MoS 2纳米复合材料纳米片材已经通过简便的超声方法制备,随后证明了其催化几种吲哚衍生物合成的能力。通过使用不同的显微镜和光谱技术了解其结构和理化性质,详细表征了所制备的纳米复合催化剂。随后,这种纳米复合催化剂被用作非均相多功能催化剂,以在水性介质中合成数种经C3官能化的吲哚。所采用的策略还为合成具有医学意义的吲哚的各种前体(例如5-羟色胺,褪黑激素和各种β-咔啉生物碱)提供了非常好的催化剂可回收性和多功能性。此外,通过使用这种方法,已在克级上制备了天然产物衍生物。此外,
An efficient synthesis of 3-indolyl-3-hydroxy oxindoles and 3,3-di(indolyl)indolin-2-ones catalyzed by sulfonated β-CD as a supramolecular catalyst in water
作者:Yogesh A. Tayade、Dipak R. Patil、Yogesh B. Wagh、Asha D. Jangle、Dipak S. Dalal
DOI:10.1016/j.tetlet.2014.12.012
日期:2015.1
rin (β-CD-SO3H) promoted efficient and fast electrophilic substitution reaction of indoles with various isatins reflux in water is reported affording various 3-indolyl-3-hydroxy oxindoles and 3,3-di(indolyl)indolin-2-ones in good to excellent yields in short reaction time.
MCM-41-Accelerated PWA Catalysis of Friedel-Crafts Reaction of Indoles and Isatins
作者:Liuzhuang Xing、YongHai Hui、Jinghui Yang、Xuejian Xing、Yadong Hou、Yang Wu、Kui Fan、Wei Wang
DOI:10.1155/2018/2785067
日期:——
catalysis concept. Here we report an efficient Friedel-Craftsreaction of indoles with isatins catalyzed by PWA/MCM-41, which got the di(indolyl)indolin-2-ones derivatives with high yield. Moreover, the catalysts were characterized by XRD and SEM/EDS, the EDS spectrum indicated that the catalyst used in this reaction also contains tungsten, and the proposed mechanism for the synthesis of 3,3-di(indolyl)indolin-2-ones