Patent ID: 6171996
Filing Date: 2001-01-09
Classification: B01J,C07C,C07F

Abstract:
A multidentate phosphite ligand selected from the group represented by the following Formula I, II, III, IV, V, VI, VII, VIII and IX: ##STR33## ##STR34##whereineach R.sup.1 is independently a primary, secondary, or tertiary hydrocarbyl of 1 to 12 carbon atoms; with the proviso that at least one of R.sup.1 must be a primary hydrocarbyl;each R.sup.2 is independently H, halogen, primary or secondary hydrocarbyl of 1 to 12 carbon atoms, OR.sup.3 wherein R.sup.3 is a C.sub.1 to C.sub.12 alkyl, or CO.sub.2 R.sup.3 ' wherein R.sup.3 ' is an aryl or a C.sub.1 to C.sub.12 alkyl;each R.sup.2 ' is independently H, halogen, CHO, primary, secondary or tertiary hydrocarbyl of 1 to 12 carbon atoms, OR.sup.3 wherein R.sup.3 is a C.sub.1 to C.sub.12 alkyl, CO.sub.2 R.sup.3 ' wherein R.sup.3 ' is an aryl or a C.sub.1 to C.sub.12 alkyl, or C(R.sup.3)(O) wherein R.sup.3 is a C.sub.1 to C.sub.12 alkyl;each R.sup.4 is independently H, a primary or secondary hydrocarbyl of 1 to 12 carbon atoms or CO.sub.2 R.sup.3 wherein R.sup.3 is a C.sub.1 to C.sub.12 alkyl; andeach R.sup.4 ' is independently H, a primary or secondary hydrocarbyl of 1 to 12 carbon atoms or aryl.