Patent ID: 7329781

Claim:
A method of preparing main group boryl compounds of formula I comprising reacting a compound of formula II with compound of formula III in the presence of a transition metal catalyst: wherein R 1 is selected from the group consisting of C 1-20 alkyl, aryl, heterocyclyl and C 3-20 cycloalkyl, all of which may be optionally substituted; E is a main group element selected from the group consisting of S, Se, Te, P, As, Sb, Si, Ge and Sn; n is 1 when E is S, Se or Te; n is 2 when E is P, As or Sb; n is 3 when E is Si, Ge or Sn; R 2 and R 2 ′ are each independently selected from the group consisting of C 1-20 alkyl, aryl, heterocyclyl and C 3-20 cycloalkyl, all of which may be optionally substituted, or R 2 and R 2 ′ are linked to form an optionally substituted monocyclic or polycyclic ring system having 4 to 20 atoms, including the B, X and X′ atoms; X and X′ are each independently selected from the group consisting of O, S and NR 3 ; and R 3 is selected from the group consisting of H, C 1-10 alkyl, aryl and C 3-20 cycloalkyl.