This research was undertaken with the idea of utilizing the reaction of a-naphthoquinone with dienes as a means of synthesizing compounds sharing with vitamins K1 and Kz the structural feature of a 1, 4-naphthoquinone nucleus with alkyl substituents at the 2 and 3 positions. It soon became apparent from other observations in this Laboratory2 that in the series of 2, 3-dialkyl-1, 4-naphthoquinones which have been assayed the ...
