Sequential alkynylation of ω-bromoalkyl triflates: facile access to unsymmetrical non-conjugated diynes including precursors to diene pheromones
摘要:
Sequential treatment of omega-bromoalkyl triflates with an alkynyllithium at 0 degreesC followed by addition of a second alkynyllithium and NaI and heating the reaction mixture provides a simple one-pot access to unsymmetrical diynes in good yields. These diynes may be transformed stereoselectively into diene pheromones such as (Z,Z)- and (E,Z)-3,13-octadecadienyl acetate. (C) 2004 Elsevier Ltd. All rights reserved.
Sequential alkynylation of ω-bromoalkyl triflates: facile access to unsymmetrical non-conjugated diynes including precursors to diene pheromones
摘要:
Sequential treatment of omega-bromoalkyl triflates with an alkynyllithium at 0 degreesC followed by addition of a second alkynyllithium and NaI and heating the reaction mixture provides a simple one-pot access to unsymmetrical diynes in good yields. These diynes may be transformed stereoselectively into diene pheromones such as (Z,Z)- and (E,Z)-3,13-octadecadienyl acetate. (C) 2004 Elsevier Ltd. All rights reserved.