Monoterpenoid/phenylpropanoid-containing compounds and methods of their making and use as seed treatments

A method for protecting plant seeds prior to or upon germination by killing or repelling insects that feed upon seeds or in root zones of seeds, comprising the steps of:

• a. coating a seed prior to planting with an insecticidal composition comprising a carrier and a compound of formula (V):
• b. planting the seed, and
• c. exposing insects to the seeds coated with the insecticidal composition,
• wherein
• R1 is a phenylpropanoid or monoterpenoid moiety;
• and
• Q is selected from the group consisting of branched or unbranched saturated or unsaturated C0-C4 alkyl, branched or unbranched C0-C4 ketone, and branched or unbranched C0-C4 amine,
• wherein the compound of Formula V is present in the insecticidal composition in amounts ranging from 0.01% w/w to 50% w/w, based on the weight of the insecticidal composition, and
• wherein the seed retains its ability to repel insects upon germination.