A Facile Synthesis of New 5H-Indazolo[3,2-b]benzo[d]-1,3-oxazines via One-Pot Intramolecular Bis-heterocyclizations
摘要:
[GRAPHICS]The parent 5H-indazolo[3,2-b]benzo[d]-1,3-oxazine heterocycle as well as a series of novel analogues have been synthesized utilizing two subsequent intramolecular heterocyclizations in one pot. A variety of diversity groups were added to explore the scope of this reaction and to provide a number of new compounds for biological screening.
The chemistry of 2<i>H</i>-3,1-benzoxazine-2,4(1<i>H</i>)-dione (Isatoic Anhydride).<b>19</b>. Direct formation of 2-aminobenzyl alcohols from the reduction of<i>N</i>-substituted isatoic anhydrides
作者:Gary M. Coppola
DOI:10.1002/jhet.5570230145
日期:1986.1
Isatoicanhydrides 1 are easily reduced with sodium borohydride to o-(substituted-amino)benzyl alcohols 3 in good yield. Sequential reduction of N-(2-nitrobenzyl)isatoicanhydride (5) with sodium borohydride followed by catalytic hydrogenation of the nitro group affords the naturally occurring 2-(2′-aminobenzylamino)-benzyl alcohol (4) in 72% yield.
A Facile Synthesis of New 5<i>H</i>-Indazolo[3,2-<i>b</i>]benzo[<i>d</i>]-1,3-oxazines via One-Pot Intramolecular Bis-heterocyclizations
作者:Jeffrey D. Butler、Danielle M. Solano、Lori I. Robins、Makhluf J. Haddadin、Mark J. Kurth
DOI:10.1021/jo702067z
日期:2008.1.1
[GRAPHICS]The parent 5H-indazolo[3,2-b]benzo[d]-1,3-oxazine heterocycle as well as a series of novel analogues have been synthesized utilizing two subsequent intramolecular heterocyclizations in one pot. A variety of diversity groups were added to explore the scope of this reaction and to provide a number of new compounds for biological screening.
Access to Quinazolines from 2-Nitrobenzaldehyde and Arylamines
作者:Jaime A. Valderrama、Hernán Pessoa-Mahana、Gabriela Sarras、Ricardo Tapia
DOI:10.3987/com-99-8606
日期:——
One-Pot Synthesis of 5<i>H</i>-Indazolo-[3,2-<i>B</i>]benzo[<i>d</i>]-1,3-Oxazine: Two Efficient Preparative Methods
作者:Danielle M. Solano、Jeffrey D. Butler、Makhluf J. Haddadin、Mark J. Kurth
DOI:10.1002/0471264229.os087.36
日期:2010.12.17
Facile Two-Step Synthesis of 2-(2′-Aminobenzylamino)benzyl Alcohol, a Naturally Occurring Amine from<i>Justicia gendarussa</i>
作者:Sukanta Bhattacharyya
DOI:10.1080/00397919508015495
日期:1995.11
Abstract A very simple and preparatively efficient two-step synthesis of the title compound 1, a basic constituent of the Indian medicinal plant Justicia gendarussa is accomplished via reductive alkylation of 2-aminobenzyl alcohol using zinc chloride and zinc borohydride.