Аңдатпа
Phenoxy-and benzyloxypropynyl alcohols of the phosphinane series are synthesized. The steric structure of individual isomers is established by means of 1 H and 13 C NMR spectroscopy. Stereodirection of the ethynylation of trans- and cis -2,5-dimethyl-1-phenyl-2-thioxo-λ 5 -phosphinane-4-ones is studied.