Patent ID: 8450493

Claim:
A spiro phosphine-oxazoline, having the following structure: Wherein: n=0˜3; R 1 , R 2 are H, C 1 ˜C 8 alkyl, halogenated alkyl, C 1 ˜C 8 alkoxy, C 2 ˜C 8 acyloxy, C 1 ˜C 8 acyl, C 2 ˜C 8 esteryl, (C 1 ˜C 8 acyl) amino, di(C 1 ˜C 8 alkyl) amino, halogen, phenyl, C 1 ˜C 8 alkyl-substituted phenyl, hydroxyl-substituted phenyl, C 1 ˜C 8 alkoxy-substituted phenyl, C 2 ˜C 8 acyloxy-substituted phenyl, halogenated phenyl, amino-substituted phenyl, (C 1 ˜C 8 acyl) amino-substituted phenyl, di(C 1 ˜C 8 alkyl) amino-substituted phenyl, C 1 ˜C 8 acyl-substituted phenyl, C 2 ˜C 8 esteryl-substituted phenyl, naphthyl, furyl, thienyl, or combined alicyclic or aromatic ring when n≧2, respectively; R 1 and R 2 can be same or different; R 3 , R 4 , R 5 , R 6 are H, C 1 ˜C 8 alkyl, halogenated alkyl, C 1 ˜C 8 alkoxy, C 2 ˜C 8 acyloxy, C 1 ˜C 8 acyl, C 2 ˜C 8 esteryl, (C 1 ˜C 8 acyl) amino, di(C 1 ˜C 8 alkyl) amino, halogen, phenyl, C 1 ˜C 8 alkyl-substituted phenyl, hydroxyl-substituted phenyl, C 1 ˜C 8 alkoxy-substituted phenyl, C 2 ˜C 8 acyloxy-substituted phenyl, halogenated phenyl, amino-substituted phenyl, (C 1 ˜C 8 acyl) amino-substituted phenyl, di(C 1 ˜C 8 alkyl) amino-substituted phenyl, C 1 ˜C 8 acyl-substituted phenyl, C 2 ˜C 8 esteryl-substituted phenyl, naphthyl, furyl, thienyl, respectively or R 3 ˜R 4 , R 5 ˜R 6 are combined alicyclic or aromatic ring; R 3 , R 4 , R 5 , R 6 can be same or different; R 7 is C 1 ˜C 8 alkyl, phenyl, C 1 ˜C 8 alkyl-substituted phenyl, hydroxyl-substituted phenyl, sulfo-substituted phenyl, C 1 ˜C 8 alkoxy-substituted phenyl, C 2 ˜C 8 acyloxy-substituted phenyl, halogenated phenyl, amino-substituted phenyl, (C 1 ˜C 8 acyl) amino-substituted phenyl, di(C 1 ˜C 8 alkyl) amino-substituted phenyl, C 1 ˜C 8 acyl-substituted phenyl, C 2 ˜C 8 esteryl-substituted phenyl, naphthyl, furyl, thienyl.