Patent ID: 6867161

Claim:
A process for an addition reaction which comprises performing an addition reaction of a reactant compound having an electrophilic functional group or an electrophilic reagent, and a reagent made from a titanium compound represented by formula (I) below TiX 1 X 2 X 3 X 4 (1) (where X 1 , X 2 , X 3 , and X 4 denote independently a halogen atom, C 1-20 alkoxy group, aralkyloxy group, aryloxy group, or —NRxRy group (where Rx and Ry denote independently a C 1-20 alkyl group or aralkyl group), and any two of X 1 , X 2 , X 3 , and X 4 may form a ring), a Grignard reagent represented by the formula (2) below in a molar amount 1-10 times as much as the titanium compound R 1 MgX 5 (2) (where R 1 denotes a C 2-10 alkyl group having a hydrogen atom at the β position and X 5 denotes a halogen atom), and a compound having a carbon-carbon unsaturated bond at a temperature in a range of −78° C. to 0° C., wherein the compound having a carbon-carbon unsaturated bond is not styrene; and wherein the addition reaction is not a polymerization reaction.