申请人:SWEARINGEN Ekaterina N.
公开号:US20080269532A1
公开(公告)日:2008-10-30
Disclosed is a method for the synthesis of fluorinated alkenes comprising contacting a fluorinated alkyne of the formula R
1
C≡C R
2
, wherein R
1
and R
2
are independently selected from CF
3
, C
2
F
5
, C
3
F
7
, and C
4
F
9
, in a pressure vessel, with a Lindlar catalyst, with substantially one molar equivalent of hydrogen, to make the corresponding cis-alkene of formula R
1
C≡C R
2
with high selectivity, wherein said hydrogen is added in portions over a period of time, so as to produce an initial pressure in the pressure in the vessel of no more than about 100 psi.
揭示了一种合成氟代烯烃的方法,包括将具有化学式R1C≡C R2的氟代炔与Lindlar催化剂在一个压力容器中接触,其中R1和R2分别选择自CF3、C2F5、C3F7和C4F9,与大约一个摩尔当量的氢反应,以高选择性地制备相应的顺式烯烃,其化学式为R1C≡C R2,其中所述氢在一段时间内分批添加,以使容器内的初始压力不超过约100 psi。