Various diacyl selenides, diacyl diselenides and selenocarboxylates were synthesized by reaction of several acyl chlorides with LiAlHSeH. Reaction of diacyl chloride with LiAlHSeH afforded cyclic selenoanhydrides. In the 77Se NMR spectra, we found that the chemical shifts of the diacyl selenides and the diacyl diselenides could facilitate their distinction.
A series of di- 3 and triorganotin esters 2 of aromatic selenocarboxylic acid were synthesized and characterized. The organotin esters 2 and 3 are stable thermally, but labile towards moisture and oxygen. They readily reacted with benzyl bromide in the presence of aluminum chloride to afford benzyl selenocarboxylates 4 in moderate yields. The reaction of triphenyltin selenocarboxylates with phenylselenenyl bromide led to aryl phenyl diselenides 5 in good yields.