aldehydes and ketones thioacetal chemistry.msu.edu noted earlier add to carbonyl groups described cyanohydrin formation Michigan State University: Aldehydes and Ketones aldehydes and ketones addition of organometallic reagents to aldehydes, ketones chemistry.msu.edu overview of ketones and aldehydes has been noted Michigan State University: Aldehídos y cetonas Aldehydes and Ketones chemistry.msu.edu described addition of organometallic reagents to aldehydes, ketones noted earlier noted earlier chemistry.msu.edu