Design and synthesis of new fluorinated ligands for the rhodium-catalyzed hydroformylation of alkenes in supercritical CO2 and fluorous solvents
作者:Dominique Bonafoux、Zihao Hua、Beihan Wang、Iwao Ojima
DOI:10.1016/s0022-1139(01)00473-0
日期:2001.11
These compounds serve as key intermediates for the syntheses of a variety of new fluorous ligands for regioselective and enantioselective catalytic reactions. Novel fluorous [Rf(CH2)3]2-BINAPHOS ligands (Rf=n-C4F9, n-C6F13, and n-C8F17) are successfully synthesized. These new fluorous chiral ligands when used with a rhodium catalyst can achieve comparable or even higher regioselectivity and enantioselectivity
新型氟双酚,5,5'-[ n -C 4 F 9(CH 2)3 ] 2 -2,2'-双酚和5,5'-[ n -C 4 F 9(CH 2)3 O] 2 -3,3'-二-叔丁基-2,2'-联苯酚,以及对映体纯BINOLs,(小号)-6,6-' - [ ñ -C 4 ˚F 9(CH 2)3 ] 2 -双酚,(R)-6,6'-[ n -C 6 F 13(CH 2)3)2 -BINOL和(S)-6,6'-[ n -C 8 F 17(CH 2)3 ] 2 -BINOL被合成。这些化合物是用于区域选择性和对映选择性催化反应的各种新型氟配体合成的关键中间体。新型氟[Rf(CH 2)3 ] 2 -BINAPHOS配体(Rf = n -C 4 F 9,n -C 6 F 13和n -C 8 F 17)已成功合成。这些新的氟手性配体与铑催化剂一起使用时,与Rh-BINAPHOS系统相比,在苯乙烯的不对称加氢甲酰化中