Question: is dmso sn1 or sn2?
Answer: The SN1 Tends To Proceed In Polar Protic Solvents. The SN2 reaction is favored by polar aprotic solvents – these are solvents such as acetone, DMSO, acetonitrile, or DMF that are polar enough to dissolve the substrate and nucleophile but do not participate in hydrogen bonding with the nucleophile.