Interrupted Nazarov Reactions Using Dichlorocyclopropanes: A Novel Mode of Arene Trapping
作者:Tina N. Grant、F. G. West
DOI:10.1021/ol7015669
日期:2007.9.1
2-Siloxy-2-alkenyl-1,1-dichlorocyclopropanes with aryl-terminated side chains undergo silver-assisted electrocyclic opening/Nazarov cyclization. The resulting 2-siloxycyclopentenyl cations are intercepted by the pendant arenes to furnish tricyclic adducts in moderate to good yields. In cases where the arene trap was tethered through the cyclopropane unit, a new mode of trapping occurred to generate unique bridged carbon frameworks.
作者:Michael P. Collins、John Mann、Nigel Capps、Harry Finch
DOI:10.1039/p19910000239
日期:——
1-(1-Hydroxy-2-trimethylsilylmethylprop-2-enyl)-2-(4-methoxybut-3enyl)-4-methoxybenzene, prepared by a short synthesis, underwent (3 + 2) cycloaddition to form predominantly the cis-fused tricycle 3,7-dimethoxy-1-methylene-2,3,3a,4,5,9b-hexhydro-1H-benz[e]indene upon treatment with TiCl4 or triflic anhydride.
COLLINS, MICHAEL P.;MANN, JOHN;CAPPS, NIGEL;FINCH, HARRY, J. CHEM. SOC. PERKIN TRANS. PT 1,(1991) N, C. 239-241
作者:COLLINS, MICHAEL P.、MANN, JOHN、CAPPS, NIGEL、FINCH, HARRY