Resonance-stabilized α-naphthylmethyl carbocations and spiro compounds based thereon: VII. Transformations of α-naphthylmethyl carbocations stabilized by one electron-donor group or peri-fused heteroring
摘要:
1-Hydroxymethyl- and 1-alkoxymethylnaphthalenes containing dimethylamino and methoxy groups or a heteroring in positions 4 and 5 react with protic and Lewis acids to give 1-naphthylmethyl carbocations. Reactions of the latter with the initial alcohol molecule lead to the formation of oligomerization or dehydrogenation (to aldehyde) products or the corresponding dinaphthylmethanes. In some cases, the process was accompanied by cyclodimerization to form cyclohexadienone spiro derivatives in a small yield.
The regioselectivity of the reactions of perimidine with cinnamic acids in polyphosphoric acid (PPA) depends on the P2O5 content. Procedures were developed for the synthesis of 4(9)- and 6(7)-cinnamoylperimidines. Cyclization of the latter under the action of an excess of AlBr3 was accompanied by dearylation to form 6-hydroxy-1,3-diazapyrene.
BOROVLEV I. V.; POZHARSKIJ A. F., XIMIYA GETEROTSIKL. SOEDIN. <KGSS-AQ>, 1975, HO 12, 1688-1691
作者:BOROVLEV I. V.、 POZHARSKIJ A. F.
DOI:——
日期:——
BOROVLEV I. V.; POZHARSKIJ A. F., XIMIYA GETEROTSIKL. SOEDIN., 1978, HO 6, 833-842
作者:BOROVLEV I. V.、 POZHARSKIJ A. F.
DOI:——
日期:——
Resonance-stabilized α-naphthylmethyl carbocations and spiro compounds based thereon: VII. Transformations of α-naphthylmethyl carbocations stabilized by one electron-donor group or peri-fused heteroring
作者:O. V. Vinogradova、E. A. Filatova、N. V. Vistorobskii、A. F. Pozharskii、I. V. Borovlev、Z. A. Starikova
DOI:10.1134/s107042800603002x
日期:2006.3
1-Hydroxymethyl- and 1-alkoxymethylnaphthalenes containing dimethylamino and methoxy groups or a heteroring in positions 4 and 5 react with protic and Lewis acids to give 1-naphthylmethyl carbocations. Reactions of the latter with the initial alcohol molecule lead to the formation of oligomerization or dehydrogenation (to aldehyde) products or the corresponding dinaphthylmethanes. In some cases, the process was accompanied by cyclodimerization to form cyclohexadienone spiro derivatives in a small yield.
BOROVLEV I. V.; POZHARSKIJ A. F.; KOROLEVA V. N., XIMIYA GETEROTSIKL. SOEDIN. <KGSS-AQ>, 1976, HO 12, 1692-1695
作者:BOROVLEV I. V.、 POZHARSKIJ A. F.、 KOROLEVA V. N.