A Convenient Synthesis of 3-Aryl-2-Methyl-3,4-Dihydro-1(2H)-Isoquinolones and -1,2,3,4-Tetrahydroisoquinolines
摘要:
A new methodology for the synthesis of 3-aryl-2-methyl-3,4-dihydro-2H-isoquinolin-1-ones and 3-aryl-2-methyl-1,2,3,4-tetrahydroisoquinolines is reported.
A new synthetic route to 2-methyl-3-(aryl or alkyl)-1-oxo-1,2-dihydroisoquinolines via an intramolecular Wittig reaction
作者:Axel Couture、Hélène Cornet、Pierre Grandclaudon
DOI:10.1016/s0040-4020(01)88466-0
日期:1992.1
2-Methyl-3-(aryl or alkyl)-1-oxo-1,2-dihydroisoquinolines 6a-g have been prepared via an intramolecular Wittig olefination reaction from the N-acyl-N-methyl-o-triphenylphosphoniomethylbenzamide bromides 5a-g.
Catalytic Intramolecular Wittig Reaction Based on a Phosphine/Phosphine Oxide Catalytic Cycle for the Synthesis of Heterocycles
作者:Long Wang、Mei Sun、Ming-Wu Ding
DOI:10.1002/ejoc.201601628
日期:2017.5.10
The catalytic intramolecular Wittig reactions of carbonyl-containing bromides are reported. The R3PO byproducts participate in the catalytic cycle; therefore, the Wittig reaction can be accomplished with only a catalytic amount of organophosphorus reagent. The reaction has also been applied to the efficient and selective synthesis of isoquinolin-1(2H)-ones, indoles, 2,3-dihydro-1H-2-benzazepin-1-ones
Fluoride ion-induced cyclization of o-[bis(trimethylsilyl)methyl]-N-acylbenzamide derivatives. New efficient synthesis of 2,3-differentially substituted 1(2H)-isoquinolones
A wide variety of 2-alkyl-3-alkyl, -3-aryl and
-3-heteroaryl-1(2H)-isoquinolones have been obtained
by fluoride ion-induced intramolecular alkenation of
o-[bis(trimethylsilyl)methyl]-N
-acylbenzamide derivatives.
A new methodology for the synthesis of 3-aryl-2-methyl-3,4-dihydro-2H-isoquinolin-1-ones and 3-aryl-2-methyl-1,2,3,4-tetrahydroisoquinolines is reported.