SEEBACH, D.;LOHMANN, J. -J.;SYFRIG, M. A.;YOSHIFUJI, MASAAKI, TETRAHEDRON, 1983, 39, N 12, 1963-1974
作者:SEEBACH, D.、LOHMANN, J. -J.、SYFRIG, M. A.、YOSHIFUJI, MASAAKI
DOI:——
日期:——
Alkylation of the isoquinoline skeleton in the 1-position
作者:Dieter Seebach、Jean-Jacques Lohmann、Max A. Syfrig、Masaaki Yoshifuji
DOI:10.1016/s0040-4020(01)91914-3
日期:1983.1
2-Bis (dimethylamino)phosphinoyl-1-lithio-1, 2, 3, 4-tetrahydroisoquinoline. A highly nucleophilic d1-reagent for the preparation of 1-substituted tetrahydroisoquinolines
作者:Dieter Seebach、Masaaki Yoshifuji
DOI:10.1002/hlca.19810640305
日期:1981.4.29
reactions with electrophiles furnish the products 6–22, 26, 27, see Table 1 and the Scheme. A second alkylation is also possible, see 23–25. The cleavage to tetrahydroisoquinolines is accomplished in refluxing aqueous-methanolic hydrochloric acid, see Table 2. Phosphinoylation, lithiation, reaction with electrophiles and cleavage constitute an efficient sequence for 1-alkylation of the isoquinoline nucleus