杂蒽是有机电子学的潜在重要材料,其合成引起人们的关注。在这里,我们报告了催化合成的5,10-二氢吲哚并[3,2- b ]吲哚类杂并苯的氧化还原中性反应的发展。2-[(2-氮杂苯基)乙炔基]苯胺通过金(I)/铑(II)中继催化进行级联环化。对照实验表明,金(I)是用于第一个与苯胺部分的吲哚环化的有效催化剂,而第二个涉及叠氮化物部分的环化是由铑(II)催化的。该协议可提供多种N取代的N′-未取代的二氢吲哚并吲哚。通过碱促进的苯并呋喃环化反应,然后通过铑(II)催化的CH氨基化反应,还可以将2-[(2-氮杂苯基)乙炔基]酚转化为10 H-苯并呋喃[3,2- b ]吲哚。还报道了2-[((2-叠氮基苯基)乙炔基]联苯的相关级联环化反应。
杂蒽是有机电子学的潜在重要材料,其合成引起人们的关注。在这里,我们报告了催化合成的5,10-二氢吲哚并[3,2- b ]吲哚类杂并苯的氧化还原中性反应的发展。2-[(2-氮杂苯基)乙炔基]苯胺通过金(I)/铑(II)中继催化进行级联环化。对照实验表明,金(I)是用于第一个与苯胺部分的吲哚环化的有效催化剂,而第二个涉及叠氮化物部分的环化是由铑(II)催化的。该协议可提供多种N取代的N′-未取代的二氢吲哚并吲哚。通过碱促进的苯并呋喃环化反应,然后通过铑(II)催化的CH氨基化反应,还可以将2-[(2-氮杂苯基)乙炔基]酚转化为10 H-苯并呋喃[3,2- b ]吲哚。还报道了2-[((2-叠氮基苯基)乙炔基]联苯的相关级联环化反应。
A New Route to Indolines by the Cu-Catalyzed Cyclization Reaction of 2-Ethynylanilines with Sulfonyl Azides
作者:Eun Jeong Yoo、Sukbok Chang
DOI:10.1021/ol800049b
日期:2008.3.1
It is revealed that 2-sulfonyliminoindolines can be efficiently synthesized by the Cu-catalyzed cyclization reaction of N-alkyl- or aryl-substituted 2-ethynylanilines with sulfonyl azides. This newroute to the indoline derivatives is characterized by mild reaction conditions, facile introduction of functional groups at the 2-position of the indoline ring, and the wide substrate scope. Selective transformation
deuterocarboxylation with tetrabutylammonium oxalate as the carbonyl source and D2O as the deuteration agent was described. For the first time, the oxalic salt acted as both the reductant and carbonyl source through single electron transfer and subsequential homolysis of the C–C bond. The strongly reductive CO2 radical anion species in situ generated from oxalate played significant roles in realizing the global
Preparation of Triazoloindoles via Tandem Copper Catalysis and Their Utility as α-Imino Rhodium Carbene Precursors
作者:Yanpeng Xing、Guorong Sheng、Jing Wang、Ping Lu、Yanguang Wang
DOI:10.1021/ol5002347
日期:2014.2.21
3-Sulfonyl[1,2,3]triazolo[4,5-b]indoles were efficiently prepared via a tandem catalysis process involving intramolecular ligand stabilized CuAAC and Cu-catalyzed C-N coupling. The obtained 3-sulfonyl[1,2,3]triazolo[4,5-b]indoles could be utilized as a-imino rhodium carbene precursors for the construction of a range of valuable indole molecules including pyrrolo[2,3-b] indoles, spirocyclopropyl iminoindoles, 2,3-dihydropyrrolo[2,3-b]indoles, 3,3'-biindoles, and 2,3'-biindoles.