67500-32-7Relevant academic research and scientific papers
Highly Site Selective Formal [5+2] and [4+2] Annulations of Isoxazoles with Heterosubstituted Alkynes by Platinum Catalysis: Rapid Access to Functionalized 1,3-Oxazepines and 2,5-Dihydropyridines
Shen, Wen-Bo,Xiao, Xin-Yu,Sun, Qing,Zhou, Bo,Zhu, Xin-Qi,Yan, Juan-Zhu,Lu, Xin,Ye, Long-Wu
supporting information, p. 605 - 609 (2017/01/07)
Platinum-catalyzed formal [5+2] and [4+2] annulations of isoxazoles with heterosubstituted alkynes enabled the atom-economical synthesis of valuable 1,3-oxazepines and 2,5-dihydropyridines, respectively. Importantly, this Pt catalysis not only led to unique reactivity dramatically divergent from that observed under Au catalysis, but also proceeded via unprecedented α-imino platinum carbene intermediates.
Synthesis of ethoxyethynylarenes by the palladium-catalyzed reaction of aryl iodides with ethoxy(trialkylstannyl)acetylenes
Sakamoto,Yasuhara,Kondo,Yamanaka
, p. 2032 - 2035 (2007/10/02)
Palladium-catalyzed reaction of aryl and heteroaryl iodides with ethoxy(trialkylstannyl)acetylenes gave the ethoxyethynylarenes and -heteroarenes, which were easily transformed by hydration reaction into ethyl areneacetates and heteroareneacetates.
Alkoxyacetylenes from alkyl 1,2-dichlorovinyl ethers
Loffler,Himbert
, p. 495 - 498 (2007/10/02)
Alkyl 1,2-dichlorovinyl ethers 4, prepared from sodium alkoxides 1 and trichloroethylene 2, react in tetrahydrofuran with two equivalents of butyllithium to afford lithium alkoxyacetylides 5. On the one hand, these acetylides react with ketones or dichlor
