Reaction of Wittig Reagents and Phosphacumulenes With 1-(Diphenylmethylene)-2(1h)- And 4- (Diphenylmethylene)-1(4h)-Naphthalenones

Depending upon the type of Wittig reagents, naphthalenone 1 reacts with reagents 3a and 3b to give adducts 4 and 5 respectively. Reaction of 1 with phosphacumulene 6 gives the phosphorane 7. On the other hand, naphthalenone 2 reacts with 3a and 3b to give adducts 8 and 9. The identity of the new compounds is established from analytical and spectroscopic evidences.