• JoomlaWorks Simple Image Rotator
  • JoomlaWorks Simple Image Rotator
  • JoomlaWorks Simple Image Rotator
  • JoomlaWorks Simple Image Rotator
  • JoomlaWorks Simple Image Rotator
  • JoomlaWorks Simple Image Rotator
  • JoomlaWorks Simple Image Rotator
  • JoomlaWorks Simple Image Rotator
  • JoomlaWorks Simple Image Rotator
  • JoomlaWorks Simple Image Rotator
 
  Bookmark and Share
 
 
Doctoral Thesis
DOI
https://doi.org/10.11606/T.46.2008.tde-30092008-085852
Document
Author
Full name
Fernanda Amaral de Siqueira
E-mail
Institute/School/College
Knowledge Area
Date of Defense
Published
São Paulo, 2008
Supervisor
Committee
Silva Junior, Luiz Fernando da (President)
Correia, Carlos Roque Duarte
Kato, Massuo Jorge
Pardini, Vera Lúcia
Sá, Marcus Mandolesi
Title in Portuguese
Reação de contração de anel de 1,2-di-hidronaftalenos com iodo(III) e sua aplicação na síntese total da (±)-indatralina
Keywords in Portuguese
(±)-indatralina
Contração de anel
Di-hidronaftalenos
Drogas de abuso (pesquisa)
Indanos
Iodo(III)
Oxidação
Reações orgânicas
Síntese orgânica
Abstract in Portuguese
Esta tese mostra a síntese total da (±)-indatralina, representando uma aplicação sintética das reações de contração de anel de 1,2-di-hidronaftalenos mediadas por iodo(III). A molécula alvo é uma trans-3-fenil-1-indanamina, que é uma candidata para o tratamento de viciados em cocaína. Na rota proposta para a síntese da (±)-indatralina, o material de partida escolhido foi uma 4-fenil-1-tetralona, que foi transformada em um 1,2-di-hidronaftaleno. A etapa chave foi a contração de anel do 1-(3,4-diclorofenil)-1,2-di-hidronaftaleno, promovida por hidróxi(tosilóxi)iodobenzeno (HTIB), que forneceu o indano trans em rendimento moderado e alta diastereosseletividade. A seqüência sintética foi concluída em 10 etapas. Descrevemos também a reação de contração de anel de uma série de 1,2-dihidronaftalenos mediadas por iodo(III). As reações dos 1,2-di-hidronaftalenos dissubstituídos com iodo(III) foram realizadas em MeOH. Os substratos metoxilados no anel aromático conduziram aos produtos de contração em rendimentos baixos. O 6,8-dimetil-1,2-dihidronafataleno foi o substrato que forneceu o indano em maior proporção. As reações das olefinas trissubstituídas com iodo(III) foram realizadas em CH3CN, fornecendo indanos em rendimentos moderados. A presença da fenila na ligação dupla levou à formação de um outro produto de rearranjo. Os substratos estudados permitiram avaliar a influência do tamanho do anel e do substituinte no rearranjo. A presença de substituinte na posição 4 favoreceu a formação dos indanos
Title in English
Ring Contraction of 1,2-Di-hydronaphthalenes with Iodine(III) and its Application in Total Synthesis of (±)-Indatraline
Keywords in English
(±)-indatraline
1,2-dihydronaphthalenes
indans
iodine(III)
Organic reactions
Organic synthesis
Oxidation
ring contraction
Abstract in English
This thesis presents the total synthesis of (±)-indatraline, representing a synthetic application of the ring contraction reaction of 1,2-dihydronaphthalenes mediated by iodine(III). The target molecule is a 3-phenyl-1-indanamine, which is a candidate for the treatment of cocaine abuse. In the proposed route, we chose a 4-phenyl-1-tetralone as a starting material, which was converted into the corresponding 1,2-dihydronaphthalene. The key step was a ring contraction of 1-(3,4-dichlorophenyl)-1,2-dihydronaphthalene, promoted by hydroxyl(tosiloxy)iodobenzene (HTIB), which furnished the trans indan in moderate yield and high diastereoselectivity. The synthetic sequence was concluded in 10 steps. We also described studies toward the oxidation of a series of 1,2-dihydronaphthalenes mediated by iodine(III), aiming the synthesis of indans through a ring contraction reaction. The reactions of disubstituted dihydronaphthalenes was performed in MeOH. The substrates containing a metoxy group at the aromatic ring led to desired indans in poor yields. The 6,8- dimethyl-1,2-dihydronaphthalene was the substrate that gave the ring contraction product in higher yield. The reactions of trisubstituted olefins with iodine(III) was performed in CH3CN, furnishing indans in moderated yields. The presence of the phenyl group at the olefin led to another product of rearrangement. These results allowed to evaluate the influences of the ring size and of the substituents at the rearrangement. The presence of a methyl group at the 4- position contributed for the formation of indan
 
WARNING - Viewing this document is conditioned on your acceptance of the following terms of use:
This document is only for private use for research and teaching activities. Reproduction for commercial use is forbidden. This rights cover the whole data about this document as well as its contents. Any uses or copies of this document in whole or in part must include the author's name.
Publishing Date
2009-03-03
 
WARNING: Learn what derived works are clicking here.
All rights of the thesis/dissertation are from the authors
CeTI-SC/STI
Digital Library of Theses and Dissertations of USP. Copyright © 2001-2024. All rights reserved.