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|Title:||Novel synthesis of trioxatetracyclo[220.127.116.11.(4,9).0(4,11)]dodecane and bibenzyl skeletons|
|Publisher:||PERGAMON-ELSEVIER SCIENCE LTD|
|Citation:||TETRAHEDRON LETTERS, 39(12), 1629-1632|
|Abstract:||A novel 7,9,11-trimethyl-8,10,12-trioxatetracyclo[18.104.22.168.(4,9).0(4,11)]-dodec-1-yl]-2-butanone skeleton 3 has been synthesized by the treatment of 2-acetyl-3,4-dihydro-2,5-di (3 "-oxo-butyl)-6-methyl-(2H)-pyran 2, with H-ZSM-5. However, the treatment of compound 2 with p-TsOH gives bibenzyls. Present report provides a unique acid catalysed cyclization of diketo-olefin system over zeolite, X-ray crystal structure of 3 is also presented. (C) 1998 . .|
|Appears in Collections:||Article|
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