PIERS, EDWARD;KARUNARATNE, VERANJA, TETRAHEDRON, 45,(1989) N, C. 1089-1104
作者:PIERS, EDWARD、KARUNARATNE, VERANJA
DOI:——
日期:——
PIERS, E.;KARUNARATNE, V., J. CHEM. SOC. CHEM. COMMUN., 1983, N 7, 935-936
作者:PIERS, E.、KARUNARATNE, V.
DOI:——
日期:——
Conjugate addition of lithium phenylthio- and cyano-[2-(4-chlorobut-1-enyl)]cuprate to cyclic enones. An efficient methylenecyclopentane annulation process
作者:Edward Piers、Veranja Karunaratne
DOI:10.1039/c39830000935
日期:——
Reaction of the cyclicenones (6)–(11) with the structurally interesting cuprate reagent (2) and (3) provides very good yields of the conjugateaddition products (12)–(17); treatment of the latter substancesh with potassium hydride in tetrahydrofuran affords the methylenecyclopentaneannulation products (18)–(23), respectively.
Organotin-based bifunctional reagents: 4-chloro-2-lithio-1-botene and related substances
作者:Edward Piers、Veranja Karunaratne
DOI:10.1016/0040-4020(89)80019-5
日期:——
transformed into the Grignard reagent 6 or the cuprates 7 and 8. Reagents 6–8 are useful for effecting methylenecyclopentaneannulations, as illustrated by the conversions of 31–36 into 43–48, respectively. This novel annulation method played a key role in a total synthesis of the sesquiterpenoid (±)-Δ9(12)-capnellene (55).