已发现用于甲醇催化钯催化的丁二烯端粒化的新的,改进的膦配体。使用高通量实验和端粒化催化剂溶液的电喷雾电离质谱(ESI-MS)研究,我们确定了P(C 6 H 4 -2-OMe)2(C 6 H 5-n(X )n),其中X是一个吸电子基团,它是高选择性,高活性的膦配体,可用于丁二烯与甲醇的端聚反应,形成甲醇至1-甲氧基-2,7-辛二烯(MOD-1)。这些配体被设计为通过烷基化减轻膦的厌氧氧化,电喷雾电离质谱法(ESI-MS)研究表明,这些配体与工作端粒化催化剂溶液中的催化剂死亡和钯沉淀相关。最佳的膦促进催化剂在高丁二烯转化率下可达到94%的所需1-甲氧基-2,7-辛二烯选择性,比三苯膦在商业上获得的显着提高。
已发现用于甲醇催化钯催化的丁二烯端粒化的新的,改进的膦配体。使用高通量实验和端粒化催化剂溶液的电喷雾电离质谱(ESI-MS)研究,我们确定了P(C 6 H 4 -2-OMe)2(C 6 H 5-n(X )n),其中X是一个吸电子基团,它是高选择性,高活性的膦配体,可用于丁二烯与甲醇的端聚反应,形成甲醇至1-甲氧基-2,7-辛二烯(MOD-1)。这些配体被设计为通过烷基化减轻膦的厌氧氧化,电喷雾电离质谱法(ESI-MS)研究表明,这些配体与工作端粒化催化剂溶液中的催化剂死亡和钯沉淀相关。最佳的膦促进催化剂在高丁二烯转化率下可达到94%的所需1-甲氧基-2,7-辛二烯选择性,比三苯膦在商业上获得的显着提高。
[EN] AN IMPROVED PROCESS FOR TELOMERIZATION OF BUTADIENE<br/>[FR] PROCÉDÉ PERFECTIONNÉ DE TÉLOMÉRISATION DE BUTADIÈNE
申请人:DOW GLOBAL TECHNOLOGIES INC
公开号:WO2010019360A3
公开(公告)日:2010-04-08
AN IMPROVED PROCESS FOR TELOMERIZATION OF BUTADIENE
申请人:Dow Global Technologies LLC
公开号:EP2321244A2
公开(公告)日:2011-05-18
IMPROVED PROCESS FOR TELOMERIZATION OF BUTADIENE
申请人:Dow Global Technologies LLC
公开号:EP2321244B1
公开(公告)日:2016-12-21
PROCESS FOR TELOMERIZATION OF BUTADIENE
申请人:Briggs John R.
公开号:US20110137086A1
公开(公告)日:2011-06-09
In an improved process for telomerizing butadiene, contact butadiene and an organic hydroxy compound represented by formula ROH (I), wherein R is a substituted or unsubstituted C
1
-C
20
-hydrocarbyl and the organic hydroxy compound is not glycerol, in a reaction fluid in the presence of a palladium catalyst and a phosphine ligand represented by formula PAr
3
(II), wherein each Ar is independently a substituted or unsubstituted aryl having a hydrogen atom on at least one ortho position, at least two Ar groups are ortho-hydrocarbyloxyl substituted aryls. The phosphine ligand has a total of two (2), three (3), four (4), five (5), or six (6) substituted or unsubstituted C
1
-C
20
-hydrocarbyloxyls, and optionally, any two adjacent substituents on an Ar group can be bonded to form a 5- to 7-membered ring.