Alkyl hydrogen atoms bonded to a carbon atom in a a (alpha) position relative to a carbonyl group display unusually high acidity.While the pK a values for alkyl C-H bonds is typically on the order of 40-50, pK a values for these alpha hydrogens is usually within the range of 19-20.lkyl hydrogen atoms bonded to a carbon atom in a a (alpha) position relative to a carbonyl group display unusually high acidity.
Adventures of Superman was the first television series featuring the comic book superhero Superman. The series, which was syndicated rather than being tied to a network, began filming in 1951, and was first aired on September 19, 1952. The final first-run episode was broadcast on April 28, 1958.
Superman is a 1978 superhero film directed by Richard Donner and based on the DC Comics character of the same name. The film is a British, Swiss, Panamanian and American joint venture, produced by Warner Bros., Film Export A.G., Dovemead Limited and International Film Productions. Superman features an ensemble cast of Marlon Brando, Gene Hackman, Christopher Reeve, Jeff East, Margot Kidder, Glenn Ford, Phyllis Thaxter, Jackie Cooper, Trevor Howard, Marc McClure, Terence Stamp, Valerie Perrine, N