396717-19-4Relevant articles and documents
Synthesis of Fused Pyrimido[1,6- a ]indolones via Rhodium(III)-Catalyzed Cascade Annulations
Raji Reddy, Chada,Bodasu, Srinivas,Mallesh, Kathe,Prapurna, Y. Lakshmi
, p. 1127 - 1136 (2020/10/29)
A novel method for the synthesis of fused pyrimido[1,6- a ]-indolone derivatives by annulation of 2-alkynylaryl aldehydes/2-alkynyl arylidene ketones with N -(pivaloyloxy)-1 H -indole-1-carboxamide catalyzed by rhodium has been accomplished. The reaction proceeds through C-H activation based annulation with alkyne moiety followed by addition of nitrogen on to aldehyde/activated alkene to give the products in moderate to good yields. Highly fluorescent dipyrrinone analogues could be synthesized from the derived products.
Synthesis of Benzothiophene-Fused Oxa[6.6.5]tricyclic Skeletons through a Cinchonidine- or NaOH-Promoted Quadruple Domino Sequence
Li, Ke,Wang, Liang,Yu, Aimin,Zhu, Lingli,Zhang, Lei,Gu, Yingchun,Meng, Xiangtai
supporting information, p. 9665 - 9669 (2019/07/05)
Two base-promoted quadruple domino reactions between thioaurones and allylic phosphonium salts have been developed to synthesize benzothiophene-fused oxa[6.6.5]tricyclic skeletons in moderate to good yields with excellent stereoselectivity and broad functional-group tolerance. This is a simple and useful protocol for the rapid construction of the umbrella-like oxa[6.6.5]tricyclic skeleton.
An Alkyne Diboration/6π-Electrocyclization Strategy for the Synthesis of Pyridine Boronic Acid Derivatives
Mora-Radó, Helena,Bialy, Laurent,Czechtizky, Werngard,Méndez, María,Harrity, Joseph P. A.
supporting information, p. 5834 - 5836 (2016/05/09)
A new and efficient synthesis of pyridine-based heteroaromatic boronic acid derivatives is reported through a novel diboration/6π-electrocyclization strategy. This method delivers a range of functionalized heterocycles from readily available starting materials.