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One‐step preparation of some 2‐isopropenyl‐2,3‐dihydronaphtho‐[2,3‐b]furan‐4,9‐diones |
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| Authors: | Seiji Yamaguchi Toshiharu Katsuki Hajime Yokoyama Yoshiro Hirai |
| Abstract: | Some 2‐isopropenyl‐2,3‐dihydronaphtho2,3‐b]furan‐4,9‐diones la‐f,b',f were prepared by one‐step cyclizations of 2‐hydroxy‐1,4‐naphthoquinones 2a‐f with 1,4‐dibromo‐2‐methyl‐2‐butene ( 3 ). |
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