通过丙炔基和烯丙基卤化物在1处羰基化,可以形成具有优异选择性和高收率的烯丙基酯R 1 R 2 C = C = C(H)C(O)R(R = OMe)或酰胺(R = NEt 2)。在MeOH或HNEt 2和1%Pd(PPh 3)4或反式-Me 2 C = C = C = C(H)Pd(PPh 3)2 Br存在下,苯中的–20 bar CO压力。讨论了可能的有机金属中间体。
Convenient synthesis of allenyl esters and amides by palladium catalyzed alkoxy- and amido-carbonylation of allenyl and propynyl halides
作者:Nguyen D. Trieu、Cornelis J. Elsevier、Kees Vrieze
DOI:10.1016/0022-328x(87)80416-3
日期:1987.5
Allenylesters R1R2C=C=C(H)C(O)R (R = OMe) or amides (R = NEt2) are formed with excellent selectivities and in good yields by carbonylation of propynyl and allenyl halides at 1–20 bar CO pressure in benzene, in the presence of MeOH or HNEt2 and 1% of Pd(PPh3)4 or trans-Me2C=C=C(H)Pd(PPh3)2Br. Possible organometallic intermediates are discussed.
通过丙炔基和烯丙基卤化物在1处羰基化,可以形成具有优异选择性和高收率的烯丙基酯R 1 R 2 C = C = C(H)C(O)R(R = OMe)或酰胺(R = NEt 2)。在MeOH或HNEt 2和1%Pd(PPh 3)4或反式-Me 2 C = C = C = C(H)Pd(PPh 3)2 Br存在下,苯中的–20 bar CO压力。讨论了可能的有机金属中间体。