155304-06-6Relevant articles and documents
Synthesis of E- and Z-substituted methylene-3,4-dihydro-2H-1-benzopyrans by regio- and stereocontrolled palladium-catalyzed intramolecular cyclization
Barberan, Olivier,Alami, Mouad,Brion, Jean-Daniel
, p. 2657 - 2659 (2001)
A stereocontrolled synthetic approach to E- and Z-substituted methylene-3,4-dihydro-2H-1-benzopyrans 5 is described from acyclic derivatives using as a key step the palladium-catalyzed intramolecular cyclic carbopalladation of iodoalkynes 4 followed by a
Diastereoselective intramolecular SmI2-H2O-amine mediated couplings
Dahlen, Anders,Petersson, Annika,Hilmersson, Goeran
, p. 2423 - 2426 (2007/10/03)
The effectiveness of SmI2-H2O-amine mixture for intramolecular couplings was discussed. Diastereoselectivities in the coupling of O-cyclohexanyliodophenol derivatives were provided into heterocycles. The amount of coupled product improved significantly as SmI2, the substrate and amine were premixed followed by a gradual addition of water.