Ruthenium-Catalyzed Regioselective Reactions of Nitriles and 1,3-Dicarbonyl Compounds with Terminal Alkynes¹
作者:Shun-Ichi Murahashi、Takeshi Naota、Yoshinori Nakano
DOI:10.1055/s-0029-1218373
日期:2009.12
RuH 2 (PPh 3 ) 4 -catalyzed reaction of nitriles with terminal alkynes proceeds highly efficiently under neutral conditions to give the corresponding Michael adducts. Furthermore, 1,3-dicarbonyl compounds react with terminal alkynes at the α-position to afford the exo-methylene compounds with high regioselectivity under neutral conditions. The regioselectivity depends upon the change of substrates
RuH 2 (PPh 3 ) 4 催化的腈与末端炔烃的反应在中性条件下高效进行,得到相应的迈克尔加合物。此外,1,3-二羰基化合物在α-位与末端炔烃反应,在中性条件下提供具有高区域选择性的外亚甲基化合物。区域选择性取决于底物的变化。提出了精确的机制。