Rs. Coleman et Eb. Grant, A LOW-TEMPERATURE MITSUNOBU REACTION FOR THE INVERSION OF STERICALLY HINDERED SECONDARY ALCOHOLS, Tetrahedron letters, 35(45), 1994, pp. 8341-8344
Mitsunobu inversion of 1,1'-binaphthalenediol 3 with benzoic acid was
studied, and the success of the reaction, was found to depend upon qua
ntitative formation of bis-oxyphosphonium salt 6 at -23 degrees C, pri
or to S(N)2 displacement at 25 degrees C.