Bases and Nucs

• Weak Nucleophile , Weak Base

  : H20 , ROH, H2S
• Strong Nucleophile , Weak Base

  CN- , N3- , RCOO- ,X- ,HS- ,RS-
• Strong base , Strong nucleophile

  HO- , NH2- , RO-, R≡C: -
• Strong Base, Weak nucleophile

  LDA , KOtBu