Synthesis of 7-, 8- and 9-membered rings via endo Heck cyclisations of amino acid derived substrates
摘要:
Aryl iodides tethered to dehydroalanine units by two to four methylene groups undergo intramolecular Heck reactions under anhydrous Jeffery conditions to give 7-, 8- and 9-membered rings by the endo-mode of cyclisation; under harsher; conditions, a palladium intermediate formed by the exo-mode of cyclisation is expressed as reduced products.
Synthesis of 7-, 8- and 9-membered rings via endo Heck cyclisations of amino acid derived substrates
摘要:
Aryl iodides tethered to dehydroalanine units by two to four methylene groups undergo intramolecular Heck reactions under anhydrous Jeffery conditions to give 7-, 8- and 9-membered rings by the endo-mode of cyclisation; under harsher; conditions, a palladium intermediate formed by the exo-mode of cyclisation is expressed as reduced products.