79280-16-3Relevant academic research and scientific papers
Palladium-catalyzed [2+2+1] oxidative annulation of 4-hydroxycoumarins with unactivated internal alkynes: Access to spiro cyclopentadiene-chroman-2,4-dione complexes
Peng, Shiyong,Gao, Tao,Sun, Shaofa,Peng, Yanhong,Wu, Minghu,Guo, Haibing,Wang, Jian
, p. 319 - 324 (2014/05/20)
Herein, we report our new results regarding a palladium-catalyzed [2+2+1] oxidative annulation of 4-hydroxycoumarins with unactivated internal alkynes, which affords a new class of compounds: the spiro cyclopentadiene-chroman-2,4- diones.
Reaction of Hydrazine Hydrate on Some Coumarins
Bakre, K. M.,Merchant, J. R.
, p. 614 - 615 (2007/10/02)
The reaction of hydrazine hydrate with coumarin derivatives having a heterocyclic ring in the 3,4-position of the coumarin has been found to give hydrazino derivatives (II, IV, VI and VIII).For the formation of the latter, it is necessary to have a hetero
