Equilibrium and 31P chemical shifts of the adducts of trialkylphosphines and isothiocyanates, and reactions of triethylphosphine and benzoyl isothiocyanate.

K Akiba, T Yoneyama, H Hamada…

Index: Akiba,K. et al. Bulletin of the Chemical Society of Japan, 1976 , vol. 49, # 7 p. 1970 - 1974

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Citation Number: 6

Abstract

The adducts (3) of triethylphosphine (1) and several isothiocyanates (2) were prepared. Equilibrium constants of the adducts (5) from tributylphosphine (4) and phenyl (2b), benzoyl (2e), and p-toluenesulfonyl isothiocyanates (2f) were determined in some solvents. The 31 P chemical shifts of 5 were measured in DMF, and correlated with Hammett σ p constants. Reactions of 3e with 1 and 2e gave phosphonium thiocyanates of 6 and 7, and of 11, ...