Vinyl vicinal tricarbonyl esters as trielectrophiles. Reactions with diamines and related trinucleophiles
作者:Harry H. Wasserman、Yun Oliver Long、Rui Zhang、Andrew J. Carr、Jonathan Parr
DOI:10.1016/s0040-4039(02)00547-6
日期:2002.4
The scope of the reactions of vinyl vicinaltricarbonyl esters with trinucleophiles has been extended in forming dipyrroles and novel polycyclic heterocyclic systems. In particular, diamines and analogs have been studied as polynucleophiles.
Vicinal tricarbonyls in synthesis. New routes to indolizidines.
作者:Harry H. Wasserman、Chi B. Vu、Jan D. Cook
DOI:10.1016/s0040-4020(01)88877-3
日期:——
The vinylvicinaltricarbonyl system 1 (VTC) has been used in two different approaches to prepare functionalized indolizidines. In one approach, 1 is used as a trielectrophile in reactions with primary amines possessing auxiliary donor sites. In a second approach, 1 is converted to a substituted 3-hydroxypyrrole-2-carboxylate. This pyrrole derivative then undergoes an intramolecular alkylation to give
Intramolecular alkylation of 3-hydroxypyrrole-2-carboxylates. Formation of , , and ring systems related to pyrrolidine alkaloids
作者:Harry H Wasserman、Jan D Cook、Chi B Vu
DOI:10.1016/s0040-4039(00)97776-1
日期:——
The intramolecularalkylation of 3-hydroxypyrrole-2-carboxylates 4, 8, and 12 leads to fused ring systems found in the pyrrolizidine, indolizidine, and related pyrrolidine alkaloids.
The chemistry of vicinal tricarbonyls. Use of vinyl and acetylenic derivatives in the synthesis of substituted indoles
作者:Harry H. Wasserman、Charles A. Blum
DOI:10.1016/0040-4039(94)88386-6
日期:1994.12
Vinyl and acetylenic vicinaltricarbonyl derivatives take part as dienophiles in Diels-Alder reactions leading to substituted indoles as well as to their dihydro and tetrahydro derivatives.
The chemistry of vicinal tricarbonyls. an efficient synthesis of (±)-vasicine
作者:Harry H. Wasserman、Gee-Hong Kuo
DOI:10.1016/0040-4039(91)85059-e
日期:1991.11
Addition of 2-aminobenzylamine to the vinyl vicinal tricarbonyl reagent leads to a short synthesis of (±)-vasicine. In this reaction, the VTC reagent acts as a trielectrophile.