Rac-2',3a,6,6,6',6'-Hexamethyl-3a,3b,6,7-tetra- hydrospiro-[benzo[2,3]cyclopropa[1,2-c]pyrazole- 1,1'-cyclo-hepta[2,4]diene]
نویسندگان
چکیده
This note describes a novel reaction cascade in which a tosylhydrazone derivative of eucarvone undergoes a non-classical dimerization process under basic conditions. The key step in this sequence is a dipolar cycloaddition between a diazo species and a transient cyclopropene. A proposed mechanism for this sequence is presented that is supported by single crystal X-ray analysis of the resulting dimer. We believe this unique transformation is of note as it highlights a neat and efficient entry to complex polycyclic architectures containing an embedded pyrazoline moiety.
منابع مشابه
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