2,3-Disubstituted indoles from olefins and hydrazinesvia tandem hydroformylation–Fischer indole synthesis and skeletal rearrangement
作者:Petra Linnepe (née Köhling)、Axel M. Schmidt、Peter Eilbracht
DOI:10.1039/b513364e
日期:——
synthesis of 2,3-disubstituted indoles. After hydroformylation of selected olefins to form alpha-branched aldehydes in a one-pot procedure these are condensed with phenylhydrazine to give hydrazones. Upon acid-promoted [3,3]-sigmatropic rearrangement indolenine intermediates with quaternary centres in the 3-position are formed, which, after selective Wagner-Meerwein-type rearrangement of one of the
Synthesis of spiro[cycloalkane-1,3′-[3<i>H</i>]indoles] from cycloalkanecarbaldehydes. Acid-catalyzed rearrangement to cycloalkano[<i>b</i>]indoles
作者:J. G. Rodríguez、Y. Benito、F. Temprano
DOI:10.1002/jhet.5570220512
日期:1985.9
Spiro[cycloalkane-1,3′-[3H]indoles] 2 can be obtained from the cycloalkanecarbaldehydes 1 by the Fischer reaction of their phenylhydrazones. These cyclizations are sensitive to the acid catalyst, solvent and temperature employed. Rearrangement of the 2 to the homologous cycloalkane derivatives 3 can occur by an acid catalyst or by thermal treatment of 2 in ethyleneglycol.
螺[环烷-1,3'-[3 H ]吲哚] 2可以通过环hydr苯甲醛的苯hydr的费希尔反应从环烷甲醛1中获得。这些环化对所用的酸催化剂,溶剂和温度敏感。通过酸催化剂或通过在乙二醇中热处理2,可以将2重新排列为同源的环烷烃衍生物3。
Rodriguez, Jose-Gonzalo; Temprano, Fernando, Journal of the Chemical Society. Perkin transactions I, 1988, p. 3243 - 3248
作者:Rodriguez, Jose-Gonzalo、Temprano, Fernando
DOI:——
日期:——
RODRIGUEZ, J. G.;BENITO, Y.;TEMPRANO, F., J. HETEROCYCL. CHEM., 1985, 22, N 5, 1207-1210
作者:RODRIGUEZ, J. G.、BENITO, Y.、TEMPRANO, F.
DOI:——
日期:——
Buu-Hoi et al., Journal of the Chemical Society, 1958, p. 738