Patent ID: 6103946
Filing Date: 2000-08-15
Classification: C07C,C07D,C07F,C08F

Abstract:
A process for the production of .alpha.-olefins, comprising, contacting, at a temperature of about -100.degree. C. to about +300.degree. C., a compound of the formula ##STR15## with ethylene and: (a) a first compound W, which is a neutral Lewis acid capable of abstracting X.sup.- an alkyl group or a hydride group from Fe to form WX.sup.-, (WR.sup.20).sup.- or WH.sup.- and which is also capable of transferring an alkyl group or a hydride to Fe, provided that WX.sup.- is a weakly coordinating anion; or(b) a combination of second compound which is capable of transferring an alkyl or hydride group to Fe and a third compound which is a neutral Lewis acid which is capable of abstracting X.sup.-, a hydride or an alkyl group from Fe to form a weakly coordinating anion;wherein:each X is an anion;n is 1, 2 or 3 so that the total number of negative charges on said anion or anions is equal to the oxidation state of an Fe atom present in (I);R.sup.1, R.sup.2 and R.sup.3 are each independently hydrogen, hydrocarbyl, substituted hydrocarbyl, or an inert functional group;R.sup.4 and R.sup.5 are each independently hydrogen, hydrocarbyl, an inert functional group or substituted hydrocarbyl;R.sup.9, R.sup.10, R.sup.11, R.sup.14, R.sup.15 and R.sup.16 are each independently hydrogen, hydrocarbyl, an inert functional group or substituted hydrocarbyl;R.sup.8 is a primary carbon group, a secondary carbon group or a tertiary carbon group; andR.sup.20 is alkyl;and provided that:when R.sup.8 is a primary carbon group none, one or two of R.sup.12, R.sup.13 and R.sup.17 are primary carbon groups, and the remainder of R.sup.12, R.sup.13 and R.sup.17 are hydrogen;when R.sup.8 is a secondary carbon group, none or one of R.sup.12, R.sup.13 and R.sup.17 is a primary carbon group or a secondary carbon group and the remainder of R.sup.12, R.sup.13, and R.sup.17 are hydrogen;when R.sup.8 is a tertiary carbon group all of R.sup.12, R.sup.13 and R.sup.14 are hydrogen; andany two of R.sup.8, R.sup.9, R.sup.10, R.sup.11, R.sup.12, R.sup.13, R.sup.14, R.sup.15, R.sup.16 and R.sup.17 vicinal to one another, taken together may form a ring.