95517-85-4Relevant articles and documents
Zn(II)-Catalyzed One-Pot Synthesis of Coumarins from Ynamides and Salicylaldehydes
Yoo, Huen Ji,Youn, So Won
, p. 3422 - 3426 (2019/05/10)
A highly efficient and straightforward synthesis of diversely substituted coumarins from ynamides and salicylaldehydes in the presence of Zn(II) catalyst has been developed. The sulfonamide moiety of ynamides was successfully recycled in this process, serving as an effective traceless directing group for high regioselectivity in the bond-forming event. The advantages of this protocol are good functional group tolerance, broad substrate scope, simple and high-yielding reaction, recovery/reuse of the sulfonamides, low catalyst loading of inexpensive catalyst, and, by these merits, a more cost-effective and greener process.
A general palladium-catalyzed carbonylative synthesis of chromenones from salicylic aldehydes and benzyl chlorides
Wu, Xiao-Feng,Wu, Lipeng,Jackstell, Ralf,Neumann, Helfried,Beller, Matthias
, p. 12245 - 12248 (2013/09/23)
Cute CO! An interesting and straightforward procedure for the carbonylative synthesis of chromenones from readily available salicylic aldehydes and benzyl chlorides has been developed (see scheme; DPPP=1,3-bis(diphenylphosphino) propane). In the presence of a palladium catalyst, various coumarins were produced in good to excellent yields. Copyright
Coumarin 1,4-dihydropyridine derivatives
Valenti,Rampa,Budriesi,Bisi,Chiarini
, p. 803 - 810 (2007/10/03)
A series of 1,4-dihydropyridines bearing a coumarin moiety in 4-position was synthesized. The compounds were evaluated for inotropic, chronotropic and calcium antagonist activities. The replacement of the o-nitrophenyl moiety of nifedipine with a coumarin
