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The preparation and reactions of some divalent derivatives of di-π-cyclopentadienylmolybdenum and -tungsten

✍ Scribed by F.W.S. Benfield; B.R. Francis; M.L.H. Green

Publisher
Elsevier Science
Year
1972
Tongue
English
Weight
139 KB
Volume
44
Category
Article
ISSN
0022-328X

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## Abstract Diethyl 5‐isopropenyl‐4,5‐dihydrofuran‐2,3‐dicarboxylate 1a and methyl 5‐isopropenyl‐3‐methoxy‐carbonyl‐4,5‐dihydrofuran‐2‐acetate 2a were prepared by cylization of diethyl 2‐oxosuccinate or dimethyl 3‐oxoglutarate with (__E__)‐1,4‐dibromo‐2‐methyl‐2‐butene. Their chemical properties we