145291-94-7Relevant articles and documents
Metal-Free, DBU-Mediated, Microwave-Assisted Synthesis of Benzo[c]xanthones by Tandem Reactions of Alkynyl-1,3-diketones
Liang, Yi-En,D. Barve, Balaji,Kuo, Yao-Haur,Fang, Hsu-Wei,Kuo, Ting-Shen,Li, Wen-Tai
supporting information, p. 505 - 511 (2020/12/01)
A base-mediated, green, microwave-assisted efficient preparation of a diverse benzoxanthone library from variety of readily accessible γ-alkynyl 1,3-diketones is reported. The synthesis is based on tandem reactions involving intramolecular cyclization, propargyl-allenyl isomerization, and electrocyclization in one pot. Some of the benzoxanthones are also synthesized by the one-pot reaction of 1,3-diketone and alkynyl bromide under basic heating conditions. This transformation also results in the construction of one new C?C bond and one new C?O bond. (Figure presented.).
Palladium-Catalyzed Carbonylative Annulation Reactions Using Aryl Formate as a CO Source: Synthesis of 2-Substituted Indene-1,3(2H)-dione Derivatives
Zhang, Ying,Chen, Jing-Lei,Chen, Zhen-Bang,Zhu, Yong-Ming,Ji, Shun-Jun
, p. 10643 - 10650 (2015/11/18)
An efficient synthesis of 2-substituted indene-1,3(2H)-diones from stable and readily available 1-(2-halophenyl)-1,3-diones by employing phenyl formate as a CO source has been developed. The reaction occurred via palladium-catalyzed intramolecular carbonylative annulation using K3PO4 as a base and DMSO as a solvent at 95 °C. In this protocol, the reaction showed a broad substrate scope with good to excellent yields.
Synthesis of Cyclic Iodonium Ylides - 3H-1λ3-Benziodiol-1-ylium Ylides via Transylidation of Iodonium Ylides to Iodides
Yang, Rui-Yang,Dai, Li-Xin,Chen, Cheng-Gang
, p. 1487 - 1488 (2007/10/02)
Cyclic iodonium ylides are synthesised via an unprecedented transylidation of iodonium ylide to aryl iodides; the structure of one cyclic iodonium ylide is determined by X-ray crystallography.