AROMATIC PHOSPHONATE-PHOSPHINES

Abstract Aromatic phosphonate-phosphines 3a,b are obtained by reaction of 4-halogen-substituted phenylphosphonates 2a,b,c and lithium diphenylphosphide. They can be transformed into air-stable phosphine-horanes 4a,b by co-ordination of the borane-THF complex. The reaction of the phosphonate-phosphine 3b with |ClRh(cod)|2 affords the corresponding rhodium phosphine complex 5. The cyclic phosphinate 8 with a hinaphthalene skeleton can be obtained by a new cyclisation reaction of 2-promo-2′-diisopropylphosphono-hinaphthalene 7 with lithium diphenylphosphide.