Synthetic strategies to epoxydiynes and a key synthon of the neocarzinostatin chromophore
作者:Olivier Thominet、James R. Baker、Hugh Britton、Zac C. Etheridge、Marco G. Soscia、Stephen Caddick
DOI:10.1039/b711196g
日期:——
towards the synthesis of epoxydiynes which represent an unusual structural feature of the neocarzinostatinchromophore. A number of different routes to these epoxydiynes have been explored with varying success. Ultimately a concise and convergent approach was developed, which involved the addition of an allenyl zinc bromide to propargylic ketones/aldehydes followed by epoxide formation. This new protocol
Palladium-catalyzed coupling of alkenyl iodides with ethynyl oxiranes: Synthesis of epoxy enediyne core intermediates related to neocarzinostatin chromophore
作者:Ravinder S Reddy、Satoru Iguchi、Shoji Kobayashi、Masahiro Hirama
DOI:10.1016/s0040-4039(97)82957-7
日期:1996.12
Coupling of functionalized cyclopentenyl iodides with ethynyl oxiranes has been achieved by using catalytic amount of Pd(CH3CN)2Cl2 and CuI in the presence of i-Pr2NEt in moderate to good yields.