Nickel- and palladium-catalyzed cross-coupling as a route to 1- and 2-alkoxy- or dialkylaminovinylphosphonates
摘要:
1- and 2-alkoxy- or dialkylaminovinylphosphonates were synthesized using reactions of the corresponding vinylhalides with di- and triethylphosphites in the presence of catalytic amounts of Ni salts and Pd complexes. The best way for synthesis of I-alkoxy or dialkylaminoderivatives is the Pd-catalyzed cross-coupling reaction with (EtO)(2)POH and the best way for 2-alkoxy- or dialkylaminovinylphosphonates is the Arbuzov reaction with (EtO)(3)P catalyzed by Ni salts. (C) 1998 Elsevier Science Ltd. All rights reserved.