219739-74-9Relevant academic research and scientific papers
Silver(I) and gold(I)-promoted synthesis of alkylidene lactones and 2H-chromenes from salicylic and anthranilic acid derivatives
Nolla-Saltiel, Roberto,Robles-Marín, Elvis,Porcel, Susana
, p. 4484 - 4488 (2014/08/05)
Ag(I) and Au(I) efficiently catalyze the cycloisomerization of terminal alkynoic acids into methylene seven-membered ring lactones. Depending on the metal, divergent reaction pathways were found for non terminal alkynoic acids. While Ag(I) led to lactones, Au(I) led to 2H-chromenes coming from the hydroarylation of the alkyne.
The thermal [3, 3] claisen rearrangement of the 3-substituted phenyl allyl and propargyl ethers. The synthesis of 4-halobenzo[b]furans
Box, Vernon G. S.,Meleties, Panayiotis C.
, p. 2173 - 2183 (2007/10/03)
The thermal [3, 3] Claisen rearrangement of the 3-substituted phenyl allyl and propargyl ethers is regioselective. The major product of the reaction incorporates a 1, 2, 3-trisubstituted benzene ring. The 2-allenylphenol intermediates can be manipulated i
