Patent ID: 6171997
Filing Date: 2001-01-09
Classification: C07C,C07F

Abstract:
A multidentate phosphite ligand having the formula of: ##STR53##whereineach R.sup.1 is independently a H, halogen, primary or 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, or CO.sub.2 R.sup.3' wherein R.sup.3' is a C.sub.1 to C.sub.12 alkyl, or aryl;each R.sup.2 and R.sup.2' are independently a H, halogen, 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, or CO.sub.2 R.sup.3' wherein R.sup.3' is a C.sub.1 to C.sub.12 alkyl, or aryl; when R.sup.2' is not hydrogen, R.sup.2' cannot be ortho to the oxygen;each R.sup.5' is independently a H, halogen, 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, or CO.sub.2 R.sup.3' wherein R.sup.3' is a C.sub.1 to C.sub.12 alkyl, or aryl;each R.sup.9 is independently H, halogen, 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, or CO.sub.2 R.sup.3' wherein R.sup.3' is a C.sub.1 to C.sub.12 alkyl, or aryl; andeach X is independently O or CH(R.sup.4'), wherein R.sup.4' is H, aryl, or a C.sub.1 to C.sub.12 alkyl.