Disclosed is a technology for enabling an efficient asymmetric Michael addition reaction which does not require a large amount of a malonic ester, while having a short reaction time. Specifically disclosed is a catalyst which is composed of MX
2
(wherein M is Be, Mg, Ca, Sr, Ba or Ra and X is an arbitrary group) and a compound represented by general formula [I]. [In the formula, R
7
, R
8
, R
9
and R
10
each represents a substituted cyclic group or an unsubstituted cyclic group.]
Strontium hexamethyldisilazide, combined with a chiral bis(sulfonamide) ligand, was found to be very effective for the catalytic asymmetricMichaeladdition of malonate to chalcone derivatives.