PRACTICAL PREPARATION OF BICYCLO[3.2.0]HEPT-3-EN-6-ONES AND IT UTILIZATION IN STEREOSELECTIVE TOTAL SYNTHESIS OF GRANDISOL AND LINEATIN VIAA VERSATILE INTERMEDIATE
G. Confalonieri et al., PRACTICAL PREPARATION OF BICYCLO[3.2.0]HEPT-3-EN-6-ONES AND IT UTILIZATION IN STEREOSELECTIVE TOTAL SYNTHESIS OF GRANDISOL AND LINEATIN VIAA VERSATILE INTERMEDIATE, Tetrahedron, 50(10), 1994, pp. 3235-3250
New and efficient stereoselective total syntheses have been devised fo
r racemic grandisol and lineatin, two important components of pheromon
ic blends. They are based on the utilisation of 1,4-dimethylbicyclo[3.
2.0]hept-3-en-6-one as a pivotal intermediate. This compound, as well
as other bicyclo[3.2.0]hept-3-en-6-ones, are now easily available by a
practical bicyclization of the corresponding 3-hydroxy-6-alkenoic aci
ds.