Abstract Reaction between t-butylmagnesium chloride and 9,lO-phenanthraquinone takes an unusual course involving 1,6-addition. This leads successively to products based on 3-t-butyl- and 3,6-di-t-butyl- 9,lO-phenanthraquinone. ... In 1968 Cameron and Meckell showed that reaction between t-butylmagnesium chloride and anthraquinone proceeded with an unusually large component of 1,6-addition, giving (1) as the major product. Sterically less ...
