learn to interact better within the interests of typical kids around him
From the information given, it sounds like no tips, instruction, or support are given by the teacher who has brought forth this issue. There are a number of helpful books for children to learn positive social interaction, but since this is occurring on the teacher's watch, it seems it would only be successful if the teacher is on board with a particular philosophy or approach. Possibly asking gently probing questions as to recommended resources, your son's role, the teacher's role in guiding the learning process and providing both positive and corrective feedback to your son and the classmates may help form a supportive partnership between home and school for his growth in this area.
For intellectual peers outside of school, might he be interested in online chess or another virtual group?
