2-甲基-1,2,5-恶二唑高氯酸盐和1-甲基-2-芳基-1,2,3-三重氮高氯酸盐与碱KCN,NaOEt,KOBu t和LiNPr i 2的反应使环扩展为取代的1,2,5-恶二嗪和1,2,4-三嗪 以氰化物为基础,反应遵循加成消除途径,在两种情况下,加成中间体已被分离或通过低温NMR光谱法直接检测到。含有氰化物的恶二唑鎓体系还通过与环扩环竞争的环降解,为α-氰基硝酮提供了一条有用的新途径。与KOBu t和LiNPr i 2的反应不需要将碱加到偶氮盐中。通过使用13 CN –进行13 C NMR光谱监测反应。报告了(E)-N-(α-氰基亚苄基)甲胺N-氧化物的X射线晶体结构。
Attempted generation of substituted 1,2,3-triazolium-1-methanides: a new ring expansion to 2,3-dihydro-1,2,4-triazines: ab initio calculations on 1,2,3-triazolium-1-oxide, -1-imide, and -1-methanide 1,3-dipoles and a striking illustration of the Hammond principle in the cyclisation of hetero-1,3,5-trienes
作者:Richard N. Butler、J. Paul Duffy、D. Cunningham、P. McArdle、Luke A. Burke
DOI:10.1039/c39900000882
日期:——
Treatment of 1-methyl-1,2,3-triazolium salts with ethoxide gave 2,3-dihydro-1,2,4-triazines via 1,2,5-triazahexa-1,3,5-trienes but the expected 1,2,3-triazolium-1-methanide 1,3-dipoles were not detected and abinitiocalculations suggest that they are thermodynamically unfavoured; the X-ray crystal structure of (6a), a dihydro-1,2,4-triazine, is reported.
Butler, Richard N.; Duffy, J. Paul; Cunningham, Desmond, Journal of the Chemical Society. Perkin transactions I, 1992, # 1, p. 147 - 152
作者:Butler, Richard N.、Duffy, J. Paul、Cunningham, Desmond、McArdle, Patrick、Burke, Luke A.
DOI:——
日期:——
Butler, Richard N.; McDonald, Peter D.; McArdle, Patrick, Journal of the Chemical Society. Perkin transactions I, 1996, # 13, p. 1617 - 1621
作者:Butler, Richard N.、McDonald, Peter D.、McArdle, Patrick、Cunningham, Desmond
DOI:——
日期:——
Generation and trapping of a 1,2,3-triazolium 1-unsubstituted methanide. A carbon analogue of the azole N-oxide: routes to pyrrolo[1,2-c][1,2,3]triazoles and substituted 1-aminopyrroles
作者:Richard N. Butler、Peter D. McDonald、P. McArdle、D. Cunningham
DOI:10.1039/p19940001653
日期:——
Trapping of the first azole N-unsubstituted methanide species, a carbon analogue of the ubiquitous azole N-oxide system is described; new synthetic routes to pyrrolo[1,2-c][1,2,3]triazoles and 1-aminopyrroles have resulted.
Butler, Richard N.; Duffy, J. Paul; McArdle, Patrick, Journal of Chemical Research, Miniprint, 1991, # 5, p. 935 - 952
作者:Butler, Richard N.、Duffy, J. Paul、McArdle, Patrick、Cunningham, Desmond