Patent ID: 7384580

Claim:
A reagent having the general formula R 1 (MgX) n .LiY wherein n is 1 or 2; R 1 is a substituted or unsubstituted C 4 -C 24 aryl or C 3 -C 24 heteroaryl, containing one or more heteroatoms; linear or branched, substituted or unsubstituted C 1 -C 20 alkyl, C 2 -C 20 alkenyl or C 2 -C 20 alkinyl; or substituted or unsubstituted C 3 -C 20 cycloalkyl; X and Y are independently or both Cl, Br or I; HalO n , where n=3, 4; carboxylate of formula RCO 2 ; dialkoxide of formula LiO—R—O; RP(O)O 2 ; or SCOR; where R is defined as R 1 above; phosphine of formula PR 2 , where R is defined as above or PR 2 represents a heterocyclic phosphine; O n SR, where n=2 or 3 and R is defined as above; or NO n , where n=2 or 3; or X=R 1 as defined above.