Synthetic photochemistry. Elaboration of the tricyclo[6.3.0.0]-undecane (‘hirsutane’) carbon skeleton by intramolecular photocyclisations of dicyclopent-1-enylmethanes
作者:Joseph S. H. Kueh、Michael Mellor、Gerald Pattenden
DOI:10.1039/p19810001052
日期:——
addition of methanol to the presumed intermediate bicyclo[2.1.0]pentane (11), producing the cis,syn,cis-tricyclo[6.3.0.0]undecane (12) in >90% yield. The general method is applied in a synthesis of the hirsutane carbon skeleton [viz. (19)→(20)] found in hirsutic acid (7) and related natural sesquiterpenes.
Preparation of derivatives of tricyclo[4.2.0.01,4]octane, broken window compounds
作者:Steven Wolff、William C. Agosta
DOI:10.1039/c39810000118
日期:——
Photolysis of 3-(3-methylbut-3-enyl)cyclopent-2-enone (4) leads to the tricyclo [5.2.0.01,5]nonane (5); the derived diazoketone (7) undergoes Wolff rearrangement to give esters (8) and (9), derivatives of tricyclo [4.2.0.01,4]octane (1).