Patent ID: 8703965

Claim:
A method of preparing a compound of formula (III), comprising the steps of: reacting a formamidine of formula (I) with a compound of formula (II) to form a compound of formula (III), according to the following reaction: wherein: Ar in each occurrence is independently selected from the group consisting of phenyl, naphthyl and anthracenyl; R 1 in each occurrence is independently selected from the group consisting of C 1 -C 6 alkyl; C 1 -C 6 alkoxy; halogen; aryl; —Si(R 2 ) 3 , wherein each R 2 is independently a C 1 -C 6 alkyl; and —NR 3 R 4 , wherein R 3 and R 4 are independently a C 1 -C 6 alkyl or wherein R 3 and R 4 , together with the nitrogen carrying them form a 5- or 6-membered heterocyclic ring; X is a leaving group; each n ranges from 0 to 5 when Ar is phenyl, from 0 to 7 when Ar is naphthyl, and from 0-9 when Ar is anthracenyl; and p is 2.