作者:Peter J. S. S. van Eijk、Cor Overkempe、Willem P. Trompenaars、David N. Reinhoudt、Lauri M. Manninen、Gerrit J. van Hummel、Sybolt Harkema
DOI:10.1002/recl.19881070202
日期:——
yield the trans four-membered cyclic nitrones 12–13 upon reaction with 6. Nitroalkene 4i reacts with 6c to give a 1:1 mixture of the cis and trans four-membered cyclic nitrones 9g and 13i. The trans stereochemistry of trans-N,N-diethyl-2, 3-dihydro-3-(2-methoxynaphthalenyl)-2-methyl-4-phenyl-2-azetecarboxamide 1-oxide (13k) was elucidated by means of X-ray analysis. Only from the reaction of 1-nitrocyclopentene
EIJK, PETER J. S. S. VAN;OVERKEMPE, COR;TROMPENAARS, WILLEM P.;REINHOUDT,+, REC. TRAV. CHIM. PAYS-BAS, 107,(1988) N 2, 27-39
作者:EIJK, PETER J. S. S. VAN、OVERKEMPE, COR、TROMPENAARS, WILLEM P.、REINHOUDT,+
DOI:——
日期:——
Dore,J.-C. et al., Chimica Therapeutica, 1971, vol. 6, p. 167 - 185
作者:Dore,J.-C. et al.
DOI:——
日期:——
2-(1-Alkenyl)- and 2-aryl-substituted four-membered cyclic nitrones as precursors for 2,3,4-substituted pyridines and quinolines
作者:W. Verboom、P.J.S.S. Van Eijk、P.O.M. Conti、D.N. Reinhoudt
DOI:10.1016/s0040-4020(01)80139-3
日期:1989.1
Reaction of the 2-(1-alkenyl)-substituted four-membered cyclic nitrones 3 with KOtBu gave the corresponding α,β-γ,δ-unsaturated oximes 6 which were converted into the substituted pyridines 9, either by azeotropic removal of water in refluxing benzene or by reactfon in a 1:1 mixture of acetic anhydride and acetic acid at room temperature. Treatment of pyridine 9c with boron tribromide afforded the benzopyrano[4