S<sub>RN</sub>1 Arylation of Some Heterocyclic Ketene Aminals with 2,4-Dinitrohalobenzenes
作者:Wen-Yi Zhao、Zhi-Tang Huang
DOI:10.1080/00397919308012586
日期:1993.9
Abstract the anion of heterocyclic ketene aminals 1 - 4 reacted with 2, 4-dinitrohalobenzenes 5 to give the monoarylated products 6, 7, 9 and 11 by a SRN1 mechanism. In some cases, the diarylated products 8 and 10 were also isolated.
HUANG ZHI-TANG; TZAI LU-HANG, CHEM. BER., 119,(1986) N 7, 2208-2219
作者:HUANG ZHI-TANG、 TZAI LU-HANG
DOI:——
日期:——
The aza–ene or the Michael addition? Examination of an unusual substituent effect on the reaction of heterocyclic ketene aminals with ethyl propiolate
作者:Mei-Xin Zhao、Mei-Xiang Wang、Zhi-Tang Huang
DOI:10.1016/s0040-4020(02)00002-9
日期:2002.2
group underwent the aza–ene reaction with ethylpropiolate under various conditions to yield the corresponding adducts, which were readily transformed into the δ-lactam fused heterocyclic products with or without the aid of sodium ethoxide in refluxing ethanol, while the ester- and cyano-substituted tertiary enediamines acted as the strong Michael donor to add to ethylpropiolate in a polar or a protic