Highly selective hydroformylation of 3,3,3-trifluoropropene to 4,4,4-trifluorobutanal using Rh/Xantphos catalyst
作者:Yuhki Ohtsuka、Osamu Kobayashi、Tetsu Yamakawa
DOI:10.1016/j.jfluchem.2014.02.005
日期:2014.5
Synthesis of 4,4,4-trifluorobutanal by Rh-catalyzed hydroformylation of 3,3,3-trifluoropropene with bis(4,5-diphenylphosphino)xanthene as a ligand was investigated. The uses of [Rh(OH)(cod)]2 (cod = 1,5-cyclooctadinene) and dimethylformamide in CO/H2 = 75/25 mixed gas under atmospheric pressure at 80 °C for 15 h provided the highest aldehyde yield 90%. The molar ratio of linear aldehyde (4,4,4-trifluorobutanal)
通过用双-3,3,3-三氟丙烯的Rh-催化加氢甲酰化(4,5-二苯基膦基)呫吨4,4,4-三氟丁醛的合成作为配体进行了研究。的[Rh(OH)(COD)]的用途2(COD = 1,5- cyclooctadinene)和二甲基甲在CO / H 2 大气压下于80 = 75/25混合气体℃下15小时所提供的最高醛产90%。线性醛(4,4,4-三氟丁醛)与支链醛(3,3,3-三氟-2-甲基丙醛)的摩尔比为99/1。连续添加在大气压力下-3,3,3-三氟丙烯的二甲基甲酰胺溶液的揭示,4,4,4-三氟丁醛形成随反应时间和总的转换数10 H保持的4 99%的选择性后线性增加达到500, 4,4-三氟丁醛在80°C下。