作者:Xavier Creary、Elizabeth D. Willis、Madeleine Gagnon
DOI:10.1021/ja0536623
日期:2005.12.1
water in the ionic liquid. The triflate derivative of pivaloin, trans-2-phenylcyclopropylcarbinyl mesylate, 2,2-dimethoxycyclobutyl triflate, the mesylate derivative of diethyl (phenylhydroxymethyl)-thiophosphonate, and Z-1-phenyl-5-trimethylsilyl-3-penten-1-yl trifluoroacetate all give products derived carbocation rearrangements (kDelta processes). anti-7-Norbornenyl mesylate gives products with complete
Stabilized and Destabilized Carbocations in the 1,6-Methano[10]annulene Series
作者:Xavier Creary、Kevin Miller
DOI:10.1021/jo035006w
日期:2003.10.1
2-Chloromethyl and 3-chloromethyl-1,6-methano[10]annulenesystems solvolyze in methanol to give simple substitution products. Solvent effect studies and the special salt effect support the involvement of cationic intermediates stabilized by the 1,6-methano[10]annulene group. Rate data indicate that the degree of cation stabilization greatly exceeds that of naphthyl groups. B3LYP/6-31G computational