Abstract
sec. 2-Hydroxyalkylphosphines of the general formula R 1PHCH 2CHR 2OH react with aldehydes and ketones forming 1,3-oxaphospholanes. The mechanism of this cyclization-reaction as well as the chemical behaviour of this new class of PO-heterocyclic compounds—especially the oxydation to P-oxides or P-sulfides, the formation of phosphonium salts and the hydrolytic cleavage of the ring is discussed.
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