已经研究了几种取代的2-(丙-2-烯基)环戊-2-烯酮的光化学。2-(丙-2-烯基)环戊-2-烯酮(2a; R = OMe或OAc),(6a)和(21)进行二-π-甲烷重排为乙烯基环丙烷[[3a和b),( 7)和(29)],而侧链取代的类似物(2b; R = OMe或OAc),(2c; R = OAc)和(6b)在相似条件下进行Z – E异构化。用(2a; R = OAc)进行的敏化和淬灭实验表明(3)源自(2a)的三重激发态。在(2a),(6a)和(21)以及(2b),(2c)和(6b)之间的反应性差异是基于在(分子的侧链。
KUEH J. S. H.; MELLOR M.; PATTENDEN G., J. CHEM. SOC. PERKIN TRANS., 1981, PART 1, NO 4, 1052-1057
作者:KUEH J. S. H.、 MELLOR M.、 PATTENDEN G.
DOI:——
日期:——
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.
Photochemistry of 2-(prop-2-enyl)cyclopent-2-enones
作者:Michael J. Bullivant、Gerald Pattenden
DOI:10.1039/p19760000249
日期:——
or OAc), (6a), and (21) undergo di-π-methanerearrangement to vinylcyclopropanes [(3a and b), (7), and (29), respectively], whereas the side-chain substituted analogues (2b; R = OMe or OAc), (2c; R = OAc), and (6b), under similar conditions, undergo Z–E isomerisation. Sensitisation and quenching experiments with (2a; R = OAc) suggest that (3) is derived from a triplet excited state of (2a). The reactivity
已经研究了几种取代的2-(丙-2-烯基)环戊-2-烯酮的光化学。2-(丙-2-烯基)环戊-2-烯酮(2a; R = OMe或OAc),(6a)和(21)进行二-π-甲烷重排为乙烯基环丙烷[[3a和b),( 7)和(29)],而侧链取代的类似物(2b; R = OMe或OAc),(2c; R = OAc)和(6b)在相似条件下进行Z – E异构化。用(2a; R = OAc)进行的敏化和淬灭实验表明(3)源自(2a)的三重激发态。在(2a),(6a)和(21)以及(2b),(2c)和(6b)之间的反应性差异是基于在(分子的侧链。