Pd/C-mediated coupling of aryl halides with terminal alkynes in water
摘要:
2-Aminoethanol facilitated the alkynylation of aryl halides (Sonogashira reaction) under palladium/charcoal-copper catalysis in water affording a mild and practical method for the synthesis of arylalkynes. A variety of terminal alkynes were coupled with aryl iodides and bromides possessing no hydrophilic functional groups to give the coupled products in good to excellent yields. (c) 2005 Elsevier Ltd. All rights reserved.